Our School Bus Catalog - Grand Rock Truck Exhaust Systems

CONTENTS
General Information............................. 2
School Bus Applications..................... 7
bluebird........................................................... 7
chevrolet/gmc............................................ 19
ford.................................................................22
freightliner..................................................23
international................................................26
thomas............................................................40
Accessories......................................... 44
Muffler Specifications....................... 64
School Bus Heater &
Defroster Motors.............................. 69
Tools.................................................... 70
Interchanges....................................... 73
Numerical............................................ 95
1-800-321-3674
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1

GENERAL INFORMATION
HOW TO USE THIS CATALOG
EASY READING APPLICATION LISTING FORMAT:
Applications are listed by gross vehicle weight and
make in this catalog. Within make, the individual
models are listed alphabetically. Models are listed from
the latest to earliest. Within model years, applications
are listed by engine size – from small to large.
A
BLUEBIRD
CLAMPS and HANGERS CHART
WFC-4
WFC-3
04-06 6 Cyl. Vision w/ 3126-C7 Caterpillar Engine BB103
SB4-8599BB
H-BBP3
RO-4
SB3-8839BB
VB-275C
H-BBM4
M-213CT
VB-461D
H-BBT5
SB8-4576BB
SB8-4575BB
S4-120SBA
H-BBP4
H-BBM2
E
B
(Air Suspension)
(Spring Suspension)
SB5-4172BB
D
S4-120SBA
C
SB3-4903BB
(through bumper)
OR
SB3-4904BB
(turn down)
A. Basic Listing is provided to show make and model
for easy reference.
B. Within model, additional information is provided to
distinguish year and engine options.
D. Part numbers appear around each part for ease of
use.
E. Clamp and Hanger Charts for Easy Reference.
C. Every listing is numbered for quick reference.
2
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PRODUCT WARRANTY
HEAVY DUTY EXHAUST PRODUCTS
Diesel Mufflers, Vertical Installations
Diesel Mufflers, Horizontal Installations
Gas Mufflers
Accessories
Chrome Parts (Peeling & Blistering Only)
LENGTH OF WARRANTY
4 Years or 500,000 miles
3 Years or 150,000 miles
1 Year
1 Year
1 Year
TERMS: VISA, MasterCard, American Express, check in advance, C.O.D., or net 30 Days with
Pre-approved credit.
FREIGHT CLAIMS: The carrier is responsible for the merchandise while it is in transit to you.
COUNT THE PIECES YOU ARE SIGNING FOR! Make note on the freight bill of any visible, lost
or damaged parts to your shipment before signing. If the damage is concealed, notify the carrier
immediately. It is your responsibility to file a freight claim.
RETURNS: 15% Minimum restocking charge on stock parts. Special order or custom-made parts
are not returnable. No merchandise may be returned without prior permission and issuance of a
Returned Goods Authorization Number.
WARRANTY: Chrome-plated (except weld area) and aluminized parts, used on a heavy duty
truck exhaust systems, are warranted against defective material and workmanship for a period of 1
year from date of shipment. It is the dealers responsibility to inform its customers of our warranty
condi tions and of proper Installation techniques. Grand Rock cannot be held responsible for damage
done as a result of improper installation. If a chrome part is determined to be defective, Grand Rock
reserves the right to replate only and return the part. If a part has been modified, altered, or otherwise
damaged the warranty is voided. Neglect is not warranted! Keep the chrome parts clean & waxed!
MUFFLER WARRANTY: Four years or 500,000 miles on vertical diesel applications; 3 years or
150,000 miles on horizontal diesel applications. Custom made mufflers and our M-465 are excluded.
This warranty applies to diesel engines only and muffler must be installed properly. Gas engine
mufflers are covered for 1 year.
MISCELLANEOUS: Minimum order of $50.00 required. Prices are subject to change without
1-800-321-3674
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3

EXHAUST PRODUCT MATERIAL
There are a number of materials used in heavy duty exhaust applications. Some of the materials are
appropriate for heavy duty applications. Other choices are not durable at the temperatures generated
by gas and diesel engines and should be avoided if acceptable service life is desired. Materials selected
must not only survive high temperatures, but also severe vibration, corrosive exhaust gasses, and external
corroding agents such as salt and water.
The materials generally considered for exhaust parts are as follows:
• Aluminized Steel
• 400 Series Aluminized Stainless Steel
• 300 Series Stainless Steel
Aluminized Steel - the preferred material for most heavy duty diesel applications. Aluminized Steel is a
low carbon steel with a thin layer of aluminum alloyed to the surface. The aluminum provides galvanic
protection for the base material. Aluminized Steel parts have an ultimate service temperature of 1250º F
with a continuous duty temperature of 1100º F. This material has excellent corrosion resistance to acidic
diesel exhaust gasses. Aluminized Steel parts provide excellent field life at a reasonable cost.
400 Series Stainless Steel - used for extended service life in diesel applications, and often in gas
applications, due to their higher operating temperatures. This material family provides slightly better
strength at exhaust system temperatures than aluminized steel. 409 Stainless Steel with an aluminum
coating is commonly used on Diesel Catalytic Converter mufflers due to its excellent high temperature
resistance and the corrosion protection. 409 Aluminized Stainless Steel is a premium material found
primarily on emission products or high temperature gas applications.
300 Series Stainless Steels - The most common material from the 300 series family is 304 Stainless Steel.
304 Stainless Steel provides excellent corrosion resistance and high heat tolerances. Because of heat
tolerance, type 304 is mainly used in areas where high stress and fatigue occur. While this material is
quickly gaining use on gas and diesel powered applications, the most prevalent use for the material is for
flex tubing. Flex tubing, produced from light gauge, interwoven, 304 Stainless Steel is an excellent choice
considering the factors of cost, durability and service life.
4
1-800-321-3674
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SCHOOL BUS CONVERSION CHART
WHEEL BASE TO PASSENGER SEATING CAPACITY (EXCLUDING STATE OF TEXAS)
BLUEBIRD
WHEEL BASES PASSENGER CAPACITIES
125" 19, 20, 21
149" 54
179", 186.5" 60
194", 201.5" 66
209", 216.5" 72
224", 231.5" 78
239", 246.5" 84
254" 90
CHEVROLET/GMC
WHEEL BASES PASSENGER CAPACITIES
125" 17, 18, 19
149.5" 36
189", 189.5" 42, 48
218" 54
235", 235.5" 60
254" 66
274" 72
FORD
WHEEL BASES PASSENGER CAPACITIES
151", 156" 36
192", 198" 48
216", 222" 54
237", 242" 60
255", 260" 66
275", 280" 72
CHEVROLET/GMC
WHEEL BASES PASSENGER CAPACITIES
151", 152" 36, 39
168", 169", 170" 42, 45
187", 193" 48, 51
205", 217", 218" 54, 57, 63
236" 60
254" 66
275", 276" 72
1-800-321-3674
www.grandrock.com
5

SCHOOL BUS EXHAUST - FLEET SURVEY FORM
Fleet Name_________________________________________________________________________________
Street______________________________________________________________________________________
City/State__________________________________________________________________________________
Owner/Manager_____________________________________________________________________________
Maint. Supervisor____________________________________________________________________________
Pts. Mgr. ___________________________________________________________________________________
Phone______________________________________________________________________________________
Exhaust Brands_ ____________________________________________________________________________
Suppliers___________________________________________________________________________________
VEHICLE ENGINE EXHAUST SYSTEM*
SCHOOL BUS # YEAR MAKE MODEL MAKE SIZE DIA. TRANS. TYPE W.B. SUSPENSION PIPE EXIT
*TRANS. TYPE (A) FOR AUTOMATIC. (S) FOR STANDARD // SUSPENSION (A) FOR AIR RIDE. (S) FOR SPRING // PIPE EXIT (L) FOR LEFT SIDE.(R)
FOR RIGHT SIDE.(SE) FOR SIDE EXIT.(UB) FOR UNDER BUMPER. (TB) FOR THROUGH BUMPER
General Comments__________________________________________________________________________
___________________________________________________________________________________________
Call Made By __________________________________________ Date_________________________________
(sales person)
6
1-800-321-3674
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BLUEBIRD
CLAMPS and HANGERS CHART
WFC-4 H-BBM3
H-BBP2 ➍ WFC-5
05-07 6 Cyl. Bluebird All-American Puller, CAT. 3126 & C7 BB100
SB1-8155 BB
SF-412
SB5-8424BB
(spring suspension)
M-131
S4-120SBA
SB8-4575BB
(spring suspension)
GBS-412
S4-120SBA
K4-24EXA
SB5-4015BB
04-07 6 Cyl. Bluebird All-American 3126 & C-7 Caterpillar Pusher BB101
SB3-8782BB
GBS-412
SB4-4004BB
OR
SB3-4017BB
catalytic
M-657CT
SB4-4016BB
99-01 6 Cyl. All-American & 8.3 Cummins ISC w/ Left Hand 4" Tailpipe BB102
N/A
GBS-412
SB2-4012BB
(through bumper)
SB4-4018BB
N/A
M-124
SB2-4013BB
(under bumper)
R50-4IA
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
7

BLUEBIRD
CLAMPS and HANGERS CHART
WFC-4
WFC-3
04-06 6 Cyl. Vision w/ 3126-C7 Caterpillar Engine BB103
SB4-8599BB
H-BBP3
RO-4
SB3-8839BB
VB-275C
H-BBM4
M-213CT
catalytic
VB-461D
H-BBT5
SB8-4576BB (Air Suspension)
SB8-4575BB (Spring Suspension)
S4-120SBA
H-BBP4
H-BBM2
SB5-4172BB
S4-120SBA
SB3-4903BB
(through bumper)
OR
SB3-4904BB
(turn down)
00-02 6 Cyl. B-Series All-American Pusher w/ 5.9L ISB Rear Engine BB104
SB3-8845BB (up to chassis 10034454)
SB3-8822BB (up to chassis 10034455)
GBS-312
SB3-8816BB
SB5-4163BB
(under bumper)
M-152
SB6-4804BB
OR
(through bumper)
99-02 6 Cyl. TC2000 Pusher w/ 3126 Caterpillar Engine BB105
GBS-412
SB1-8178BB
SB4-8590BB
SB3-8818BB
SB5-4165BB
M-625
8
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

BLUEBIRD
CLAMPS and HANGERS CHART
G-GM1
RB-25ZN
98-02 8 Cyl. CV200 GMC B7 Conventional Chassis w/ 454-502 Engine BB106
H-BBM1
G-BB2
SB5-8457BB
SB4-8583GM
RO-3
WFC-4
PH-4
H-BBM3
SB2-4002GM
M-622 M-310CT
WFC-5
S4-120EXA
SB3-4896BB
SB5-4133BB
SB5-4134BB
99-01 6 Cyl. All-American & TC2000 8.3 Cummins ISC w/ 5" Tailpipe BB107
SB4-4004BB
(OE# 0065007)
SB4-4873BB
(through bumper)
SB2-8674BB
N/A
GBS-412
M-124
SB4-4874BB
(under bumper)
99-01 6 Cyl. All-American 3126 Caterpillar Pusher w/ 5" Tailpipe BB108
SB3-8782BB
SB4-4004BB
(OE# 0065007)
SB4-4873BB
(through bumper)
SB2-8674BB
GBS-412
M-124
SB4-4874BB
(under bumper)
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
9

BLUEBIRD
CLAMPS and HANGERS CHART
WFC-4
RMH-9
WFC-5
VB-461D
H-BBM5
H-BBP1
H-BBP3
VB-275C
WFC-3
RMH-10
99-00 6 Cyl. All-American B-Series w/ Cummins Engine; 4" System BB109
SBI-8173BB
GBS-312
SB8-3015BB
(spring suspension)
R40-3IA M-131
SB8-4576BB (air suspension)
SB8-4575BB (spring suspension)
SB5-4172BB
SB3-4903BB (through bumper)
S4-120SBA
S4-120SBA
SB7-8250BB
(air suspension)
OR
SB3-4904BB (under bumper)
98-01 6 Cyl. All-American Puller, Cat. 3126 & Cummins 8.3 ISC Engines BB110
(CAT.)
SB1-8155BB
SF-412
SB5-8424BB
M-514
S5-120SBA
SB5-4139BB
front overaxle pipe
(spring suspension)
SB1-8156BB
(Cummins)
GBS-412
SB5-4138BB
front overaxle pipe
(air suspension)
SB3-4890BB
rear overaxle pipe
S5-120SBA
SB2-4978BB
98-01 6 Cyl. 3126 Cat Bluebird CV200; GMC B7 Conventional Chassis BB111
SB3-8772BB
M-079
S5-120EXA
SB4-8572BB
SB5-4133BB
SB3-8773BB
SB2-8668BB
SB5-4134BB
97-00 6 Cyl. TC1000, 5.9L B-Series Cummins Engine; 132" Wheel Base BB112
SB2-8669BB
GBS-312
SF-318
(3" flex)
SB4-8574BB
R40-3IA
M-395CT
catalytic
S4-120SBA SB3-4886BB SB4-4869BB
SB3-4885BB (through bumper)
SB3-4887BB (under bumper)
10
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

BLUEBIRD
CLAMPS and HANGERS CHART
VB-275C
WFC-3
WFC-4
RMH-10
VB-461D
H-BBM2
H-BBP1
H-BBP2
95-98 6 Cyl. TC2000 w/ 6BTA; 5.9L Turbo Diesel; Rear Exit Tail Pipe;Side Mounted
Fuel Tank; w/ Converter; 132", 146" - 195", 216" - 237" W.B.
BB113
SB1-8153BB
SF-318 SB4-8564BB CP-312A
(3" flex) (132" W.B.) SB2-8425BB
SB8-3015BB
(146" - 237" W.B.)
catalytic
M-395CT
SB6-8420BB
SB3-4879BB
SB8-3037BB
SB5-4130BB
94-98 6 Cyl. 3116 Cat Bluebird CV200; GMC B7 Conventional Chassis BB114
SB3-8774BB
M-079
SB4-8572BB
SB5-4133BB
SB5-4134BB
SB3-8773BB
SB2-8668BB
S4-120EXA
94-98 6 Cyl. All-American w/ 3116 Caterpillar Rear Engine BB115
SB1-8157BB
GBS-412
SB4-8592BB
SB5-4167BB
M-657CT
catalytic
SB4-8591BB
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
11

BLUEBIRD
CLAMPS and HANGERS CHART
VB-275C
WFC-3
WFC-4
RMH-10
WFC-5
VB-413C
94-98 6 Cyl. TC2000, 5.9L B-Series Cummins Engine; w/ Air Ride Suspension;
174"-216" W.B., 237" W.B. BB116
SB2-8669BB
M-395CT
SF-324
(3" flex)
S4-120SBA
SB4-8573BB R4O-3IS
SB5-4143BB
(front overaxle)
catalytic
SB5-4137BB
(rear overaxle pipe)
(side mount fuel tank)
SB3-4885BB
(through bumper)
(3 bend)
(side mount fuel tank)
SB2-4977BB
(mid mount fuel tank)
SB8-3045BB
(mid mount fuel tank)
SB3-4884BB
(2 bend)
(side mount fuel tank)
92-98 6 Cyl. All-American w/ Cummins 8.3L Turbo Diesel; Spring Front Suspension;
Mid Mounted Fuel Tank (from Chassis No. 977611); 5" Tail Pipe Through
Rear Bumper; 175" - 190", 197½" - 227½", 235"-242½" W.B. BB117
SB2-8754BB
(92-95)
SB2-8735BB
(96-98)
SF-418
(4" flex) SB4-8566BB S5-120SBA
S4-18EXA
w/ S5-18EXA
(235" - 242½")
M-465
SB3-8768BB
SB4-8570BB
SB4-4866BB
S5-60SBA
92-98 6 Cyl. All-American w/ Cummins 8.3L Turbo Diesel; Spring Front Suspension;
Side Mounted Fuel Tank (from Chassis No. 977611); 5" Tail Pipe;
175", 190", 197½" - 227½", 235"-242½" W.B. BB118
SB2-8754BB (92-95)
SB2-8735BB (96-98)
SF-418
(4" flex) SB4-8566BB S5-120SBA
S4-18EXA
w/ S5-18EXA
(235" - 242½")
M-465
SB3-8768BB
SB4-8570BB
S5-48SBA (175")
S5-60SBA (190")
S5-120SBA
(197½" - 242½")
N/A
12
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

BLUEBIRD
CLAMPS and HANGERS CHART
VB-461D
WFC-4
WFC-5
RMH-10
WFC-3
RMH-9
92-98 6 Cyl. All American w/ Caterpillar 3116 (6.6L) Diesel; Mid-Mounted
Fuel Tank (From Chassis No. 977303); 5" Tail Pipe Through
Rear Bumper; 175", 190"-227½", 235"-242½" W.B.
SB3-8846BB SF-412
(4" flex) SB4-8566BB S5-120SBA
w/ S5-18EXA
(235" - 242½")
M-465
BB119
92-98 6 Cyl. All American w/ Caterpillar 3116 (6.6L) Diesel;
Side-Mounted Fuel Tank (From Chassis No. 977303);
5" Tailpipe; 175", 190", 197½"-227½", 235"-242½" W.B. BB120
SB3-8768BB
SB4-8570BB
SB4-4866BB
S5-60SBA (175")
S5-120SBA
(190" - 242½")
SB3-8846BB
SF-412
(4" flex)
SB4-8566BB
S5-120SBA
w/ S5-18EXA
(235" - 242½")
M-465
SB3-8769BB
(92-95)
SB4-4893BB
(96-98)
SB4-8570BB
S5-48SBA (175")
N/A
S5-60SBA (190")
S5-120SBA (197½" - 242½")
92-98 6 Cyl. All American w/ Caterpillar 3116 (6.6L) Diesel;
Side Mounted Fuel Tank; 5" Tail Pipe (From Chassis No. 977303);
175", 190", 197 ½"-227 ½", 235"-242 ½" W.B. BB121
N/A
SF-412
(4" flex)
SB4-8566BB
S5-120SBA
w/ S5-18EXA
(235" - 242½")
M-465
SB3-8768BB
SB4-8570BB
S5-48SBA (175") N/A
S5-60SBA (190")
S5-120SBA (197½" - 242½")
88-97 6 Cyl. TC2000 w/ 6BTA; 5.9L Turbo Diesel; Rear Exit Tail Pipe;
Mid-Mounted Fuel Tank; w/ Codes 4452, 4453, 4513, 4514;
132", 146"-174", 195"-216", 237" W.B. BB122
SB4-8564BB
SB8-3015BB
(132")
(146" - 237")
SB2-8662BB
S F-318
(3" flex)
CP-312A
M-131
SB2-8425BB
S4-120SBA SB3-4897BB SB6-8421BB S4-120SBA
SB6-8420BB
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
13

BLUEBIRD
CLAMPS and HANGERS CHART
WFC-4
RMH-85
WFC-3
92-95 8 Cyl. CV200 w/ 366, 427 C.I.D. gas Engine w/ Converter; Tail Pipe Exits
at the Rear of Bus; 145", 157"-193", 209"-261" W.B.
G-BB1
SB4-8516GM
BB123
G-BB1
SB4-8517GM
M-722
N/A
SB3-4812BB
SB3-4813BB
S4-120SBA
(145" - 193")
(209" - 261")
SB3-4814BB
SB7-4645BB
SB8-3008BB
92-95 8 Cyl. CV200; 366, 427 (6.0, 7.0) TBI Eng.; With Converter; Tail Pipe Exits
Side of Bus in Front of Rear Wheel; 145", 209", 261" W.B.
BB124
G-BB1
G-BB1
SB4-8516GM
SB4-8517GM
M-722
N/A
SB3-4812BB SB8-3028BB
(all w/ left hand fuel tank)
SB3-4813BB
(209" - 261" W.B.)
SB3-4815BB
SB3-4816BB
92-95 8 Cyl. CV200; 366, 427 (6.0, 7.0) TBI Eng.; With Converter; Tail Pipe Exits
Side of Bus Behind Rear Wheel; 145", 209", 261" W.B.
BB125
G-BB1
G-BB1
SB4-8516GM
N/A
SB5-4907BB
SB4-8517GM
M-722
SB3-4812BB SB8-3028BB
(all w/ left hand fuel tank)
SB3-4814BB
SB3-4813BB
(209" - 261" W.B.)
SB3-4816BB
92-95 8 Cyl. CV200; 366, 427 (6.0, 7.0) TBI Eng.; With Converter; Tail Pipe Exits
Side of Bus Behind Rear Wheel; 145", 209", 261" W.B.
BB126
G-BB1
SB4-8516GM
G-BB1
N/A
SB4-8517GM
M-722
SB8-3028BB SB7-4645BB
SB3-4812BB
SB3-4814BB
(all w/ left hand fuel tank)
SB3-4813BB
(209" - 261" W.B.)
SB8-3008BB
14
1-800-321-3674
www.grandrock.com

BLUEBIRD
CLAMPS and HANGERS CHART
VB-275C
WFC-3
WFC-4
RMH-9
87-95 6 Cyl. Models with standard exhaust (Side Exit in Front of Rear Tire)
TC2000; 5.9L Cummins Diesel Engine, Automatic Transmission
BB127
SB3-8487BB
(auto trans)
SF-318
(3" flex)
SB8-3015BB
SB2-8425BB
M-131
SB7-4633BB
87-95 6 Cyl. Models with Extended Tailpipe (Rear Outlet) TC2000; 5.9L Cummins
Diesel Engine; 132", 160"-216" W.B., Automatic Transmission
BB128
SB3-8487BB
(auto trans)
SF-318
SB2-8425BB
(3" flex)
SB8-3015BB
(auto trans., 160" - 216")
SB4-8564BB
(auto trans., 132" W.B.)
M-131
SB3-4798BB
S4-120SBA
SB3-4799BB
SB5-4880BB
S4-120SBA
SB6-4744BB
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
15

BLUEBIRD
CLAMPS and HANGERS CHART
VB-275C
WFC-3
WFC-4
RMH-9
H-BBM1
VB-461D
WFC-35
H-BBP1
H-BBP2
88-94 6 Cyl. TC2000 w/ 6BTA; 5.9L Turbo Diesel; Rear Exit Tail Pipe;
Side Mounted Fuel Tank; 132", 146"-195", 216"-237" W.B.
SB2-8662BB
SB8-3015BB
(146" - 237")
BB129
SF-318
CP-312A
(3" flex) SB4-8564BB
(132")
SB2-8425BB
M-131
SB6-8420BB SB3-4879BB SB8-3037BB SB5-4129BB
92-93 6 Cyl. GMC-Bluebird 3116 Caterpillar Engine BB130
SB3-8796BB
SB1-0798BB
SB2-8668BB
M-034
S4-120EXA SB4-8572BB SB5-4135BB
S4-120SBA
91-92 6 Cyl. All American w/ Caterpillar 3116 Turbo Diesel;
4" Rear Exit Tail Pipe; (Before Chassis No. 977303);
175"-197 ½", 205"-242 ½" W.B. BB131
N/A
GBS-3512
(3½" flex)
N/A
S4-1685BA M-131
SB4-4796BB SB4-4797BB S4-168SBA
(205" - 242½") (205" - 242½")
S4-120SBA
S4-120SBA
(175" - 197½") (175" - 197½")
SB5-4843BB
88-92 6 Cyl. All American w/ 8.2LT, 8.2LTA Front Engine Models;
Rear Exit Tail Pipe; 175"-242 ½" W.B.
BB132
N/A
SF-3518
(3½" flex)
N/A
S4-120SBA
SB4-4796BB SB4-4797BB S4-120SBA
M-131
SB5-4843BB
16
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

BLUEBIRD
CLAMPS and HANGERS CHART
WFC-35
WFC-4
G-BB1 WFC-3
RMH-85
88-92 8 Cyl. All American w/ Cummins 8.3L Front Engine Models; w/ 4" Exhaust
(Before Chassis No. 977611); 175"-242 ½" W.B.
BB133
N/A
SF-3518
(3½" flex)
N/A
S4-120SBA
SB4-4796BB SB4-4797BB S4-120SBA
M-131
SB5-4843BB
88-91 8 Cyl. All models w/366 C.I.D. Engine w/ Converter; 254", 274" W.B. BB134
SB4-8516BB
M-722
SB4-8517BB
N/A
SB3-4813BB SB6-4708BB SB5-4809BB
(254" W.B.)
SB8-3008BB
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
17

BLUEBIRD
CLAMPS and HANGERS CHART
WFC-35 RMH-9
WFC-4
82-87 8 Cyl. All American; Caterpillar 3208 Diesel Eng.; All W.B. BB135
N/A
N/A
N/A
N/A
N/A
N/A
S4-120SBA
M-131
SB4-4796BB
SB4-4797BB
S4-120SBA
SB5-4843BB
(from chassis #
0957784)
80-87 8 Cyl. All American w/ 8.2L Turbo Diesel Front Engine Models;
Rear Exit Tail Pipe; 175"-242 ½" W.B.
BB136
N/A
SF-3518
(3½" flex)
N/A
S4-120SBA
M-131
SB4-4796BB SB4-4797BB S4-120SBA
N/A
80-87 8 Cyl. All American; Cummins 504, 555 Diesel Eng.; All W.B. BB137
N/A
N/A
N/A
N/A
N/A
N/A
S4-120SBA
M-131
SB4-4796BB
SB4-4797BB
S4-120SBA
SB5-4843BB
(from chassis #
0957784)
18
1-800-321-3674
www.grandrock.com

CLAMPS and HANGERS CHART
G-GM1
RB-275ZN
H-BBM1
G-BB2
RO-3
WFC-4
PH-4
VB-461D
H-BBM5
H-BBP1
11 H-BBP2
12 RB-3ZN
CHEVROLET/GMC
98-02 8 Cyl. CV200 GMC B7 Conventional Chassis w/ 454-502 Engine CH200
SB4-8583GM
SB5-8457BB
SB2-4002GM
M-622 M-310CT
S4-120EXA
SB3-4896BB
SB5-4133BB
SB5-4134BB
97-02 8 Cyl. GMC Kodiak Topkick Chassis w/ 6.5L Turbo Diesel Engine CH201
SB4-8621GM
SB3-8871GM M-624
SB2-4002GM
12
S4-120EXA
SB3-4896GM
SB5-4133BB
SB5-4134BB
98-01 6 Cyl. 3126 Cat., CV200; GMC B7 Conventional Chassis CH202
SB3-8772BB
M-079
S4-120EXA
SB4-8572BB
SB5-4133BB
11
SB3-8773BB
SB2-8668BB
SB5-4134BB
94-98 6 Cyl. 3116 Cat., CV200; GMC B7 Conventional Chassis CH203
SB3-8774BB
SB4-8572BB
SB5-4133BB
11
SB3-8773BB
M-079
SB2-8668BB
S4-120EXA
SB5-4134BB
1-800-321-3674
www.grandrock.com
19

CHEVROLET/GMC
CLAMPS and HANGERS CHART
RMH-85
WFC-3
WFC-4
VB-461D
H-BBM1
H-BBP1
H-BBP2
92-95 8 Cyl. B7; 366, 427 (6.0, 7.0) TBI Eng.; With Converter; Tail Pipe Exits
Side of Bus Behind Rear Wheel; 145", 209" & 261" W.B.
CH204
G-BB1
G-BB1
SB4-8516GM
N/A
SB5-4907BB
SB4-8517GM M-722
SB3-4812BB SB8-3028BB
(LH fuel tank)
SB3-4813BB
SB3-4814BB
(209" - 261" W.B.)
SB3-4816BB
92-95 8 Cyl. B7; 366, 427 (6.0, 7.0) TBI Eng.; With Converter; Tail Pipe Exits
Side of Bus in Front of Rear Wheel; 145", 209" & 261" W.B.
CH205
G-BB1
SB4-8516GM
G-BB1
N/A
SB4-8517GM
M-722
SB8-3028BB SB7-4645BB
SB3-4812BB
SB3-4814BB
(LH fuel tank)
SB3-4813BB
(209" - 261" W.B.)
SB8-3008BB
92-95 8 Cyl. B7; 366, 427 (6.0, 7.0) TBI Eng.; With Converter; All W.B.;
Tail Pipe Exits at Rear of Bus; 145", 209" & 261" W.B.
G-BB1
SB4-8516GM
CH206
G-BB1
SB4-8517GM
M-722
N/A
S4-120SBA SB3-4814BB SB7-4645BB
SB3-4812BB
(145" - 193" W.B.; LH fuel tank)
SB3-4813BB
(209" - 261" W.B.)
SB8-3008BB
92-95 6 Cyl. GMC 3116 Caterpillar Engine CH207
SB3-8796BB
SB1-0798BB
SB2-8668BB
M-034
SB4-8572BB
S4-120EXA
SB5-4135BB
S4-120SBA
20
1-800-321-3674
www.grandrock.com

CHEVROLET/GMC
CLAMPS and HANGERS CHART
G-BB1 WFC-3 OMH-8511
RMH-85 WFC-4 VB-475D
85-91 8 Cyl. High Temperature Exhaust System B6PO42;
366 TBI Engine; 254", 274" W.B. CH208
SB4-8516GM
SB4-8517GM
M-722
SB4-4823GM SB4-4773BB
SB5-4809BB
SB6-4708BB (254")
SB8-4568BB (274")
SB8-3008BB
80-91 8 Cyl. B6, S7; 8.2N Eng.; Auto Trans;
189", 218", 235", 254" & 274" W.B. CH209
N/A
N/A
(4"
flex)
N/A
SF-424
SB8-8104GM
(86-91)
M-153
SB4-4773BB
SB8-4568BB
(274")
SB6-4708BB
(254")
SB5-4809BB
SB8-3008BB
80-91 8 Cyl. B6, S7; 8.2T Eng. (Turbocharged); Auto Trans;
189", 218", 235", 254" & 274" W.B. CH210
VB-475D
N/A
(4"flex)
SF-424
(86-91)
N/A
SB8-8104GM
M-153
SB4-4773BB
SB8-4568BB
(274")
SB6-4708BB
(254")
SB5-4809BB
SB8-3008BB
89-91 8 Cyl. All models w/366 C.I.D. Engine w/ Converter; 254", 274" W.B. CH211
SB4-8516BB
SB4-8517BB
M-722
N/A
SB3-4813BB
SB8-4568BB
(274")
SB6-4708BB
(254")
SB5-4809BB
SB8-3008BB
1-800-321-3674
www.grandrock.com
21

FORD
CLAMPS and HANGERS CHART
VB-275C
WFC-4
RMH-11
VB-419C
95-98 6 Cyl. B800, FD1060 w/ 5.9L Cummins Diesel; w/ Converter;
Air Suspension; 151"-275" W.B.
FD300
SB5-8423FT
catalytic
M-355CT
S4-120SBA
SB4-8571FT SB3-4882FT
SB8-4587FT
S4-120SBA
92-98 6 Cyl. B600, B700, FD1060 Diesel Eng.; 5.9L;
216" W.B. and Shorter; 237" W.B. and Longer FD301
SB5-8362FT
M-502 S4-120SBA SB7-4654FT S4-120SBA
SB4-4821FT
87-94 6 Cyl. B600, B700; 6.6L Diesel Eng.; Models Built Before 11-93
87-94 6 Cyl. B600, B700; 7.8L Diesel Eng.; Models Built Before 11-93 FD302
SB4-8348FT (6.6L)
SB4-8347FT (7.8L)
SB4-8349FT
SB7-4627FT
M-529 S4-120SBA S4-120SBA
(216" and shorter W.B.) (216" and shorter W.B.)
S4-168SBA
S4-168SBA
(237" and longer W.B.) (237" and longer W.B.)
22
1-800-321-3674
www.grandrock.com

CLAMPS and HANGERS CHART
VB-300F
WFC-3
H-FLP3
H-FLP1
VB-275C
WFC-4
H-FLM1
VB-475C
S4-120EXA
(cut to length)
FREIGHTLINER
2002 6 Cyl. FS65 Model w/ Cummins 5.9L Diesel, Air Suspension, Handicap Pkg. FL400
SB5-8479FL
M-070
SB5-6173FL
SB5-4166FL
SB8-8338FL
*Side Exit Pipes pg. 45
02-04 4-6 Cyl. Freightliner Mercedes Engine - Air Ride Suspension FL401
(6 cylinder)
(4 cylinder)
N/A
SB5-8471FL
(4 cyl.)
SB6-8450FL (6 cyl. OE# 04-22451-000)
SB5-8468FL (6 cyl. OE# 04-22450-000)
SB5-8464FL (6 cyl. OE# 04-20964-000)
M-581CT (catalytic)
M-502
M-070
M-355CT
(catalytic)
S4-120EXA
S4-120EXA
02-04 6 Cyl. Freightliner B-Series Cummins Engine w/ World Trans. FL402
SB6-4505FL
SB6-4505FL
SB5-4166FL
SB5-4166FL
S4-120SBA
S4-120SBA
SB5-8479FL
M-675CT (catalytic)
M-070
S4-120EXA
SB6-4808FL (air suspension OE# 04-21453-000)
SB6-4807FL (air suspension OE# 04-22434-000)
SB6-4806FL (air suspension OE# 04-22433-000)
SB5-4166FL
S4-120SBA
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
23

FREIGHTLINER
CLAMPS and HANGERS CHART
VB-300F
WFC-3
H-FLP3
H-FLP1
VB-275C
WFC-4
H-FLM1
VB-475C
02-04 6 Cyl. Freightliner 3126 Caterpillar Engine FL403
SB6-0759FL
(OE# 04-20795-000)
SB6-4460FL
(OE# 04-22446-000)
SB6-2446FL
(OE# 04-22446-001
World Trans)
SB6-8449FL
(OE# 04-21077-000)
M-502
S4-120EXA
SB6-4505FL
SB5-4166FL
S4-120SBA
**
05-06 4 - 6 Cyl. Freightliner Mercedes Engine FL404
(4 cyl.)
SB6-2748FL
(OE# 04-22748-000)
N/A
(6 cyl.)
SB3-1015FL
(OE# 04-21015-012)
SB5-2581FL
(OE# 04-22581-000)
M-502
S4-120EXA
SB6-4505FL
SB5-4166FL
S4-120SBA
24
**Optional Muffler Hangers pg. 52
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

FREIGHTLINER
CLAMPS and HANGERS CHART
VB-275C
H-FLM1
H-FLP3
H-FLP4
H-FLP5
VB-461D
WFC-4
H-FML2
WFC-3
98-01 6 Cyl. Freightliner B-Series Cummins Engine FL405
SB4-8557FL
SB4-8562FL
(w/ ISB eng.)
M-070
(w/o ISB eng.)
(w/ ISB eng.)
(catalytic)
M-675CT
S4-120EXA
SB8-3036FL
(rear fuel tank
left side exit)
SB8-3034FL
SB8-3033FL
SB8-3044FL
SB8-3035FL
SB2-4997FL (under bumper)
SB3-4897FL (through bumper)
R40-3IS
SB8-3047FL
SB8-3048FL
98-01 6 Cyl. Freightliner 3126 Caterpillar Engine FL406
SB3-8794FL
(3126T, 2 bend pipe)
SB5-8482FL
(3126B, 3 bend)
(catalytic)
M-581CT
M-529
(non-catalytic)
S4-120EXA
SB8-3036FL
SB8-3034FL
SB8-3044FL
SB8-3035FL
(276" W.B.)
SB2-4997FL
(under bumper)
SB8-3033FL
SB3-4897FL
(through bumper)
SB8-3047FL
SB8-3048FL
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
25

GENESIS
CLAMPS and HANGERS CHART
VB-351I WFC-35
H-IHM6
H-IHP5
WFC-4
94-98 6 Cyl. Model 3900 Front Engine Chassis w/ DT466 Diesel;
RH Tail Pipe; w/ Air Suspension; 152"–276" W.B.
GS500
SB7-8230TH
M-536
SB3-4898IH
S4-120SBA
SB7-4632IH
SB4-8569IH
S4-120SBA
94-98 6 Cyl. Model 3900 Front Engine Chassis w/ DT466 NGD Diesel;
w/o Air Suspension; 152"–276" W.B.
GS501
SB7-8230TH
M-536
SB7-4646IH (LH exit)
SB7-4607IH (RH exit)
SB3-4898IH
S4-120SBA
SB8-3032IH
92-94 6 Cyl. Model 3900 Front Engine Chassis w/ DT360 Diesel;
RH Tail Pipe; w/ Air Suspension; 152"–276" W.B.
GS502
SB7-8230TH
M-536
SB3-4898IH
S4-120SBA SB7-4632IH
SB4-8569IH
S4-120SBA
26
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-351I
H-IHP3
WFC-35
WFC-4
H-IHM4
H-IHP1
H-IHP5
07 - 08 FE International DT-466 Engine, Right Side Exit Max Force DT INT600
SB3-4019IH
SB5-4020IH
SB3-8860IH
M-580CT
catalytic
S4-18EXA
S4-120SBA
SB4-4892IH SB6-4005IH
S4-120SBA
(2 used)
(2 used)
(2 used)
(2 used)
04 - 05 8 Cyl. Model IC w/VT365 Diesel INT601
SB5-3629IH
SB5-5472IH
SB5-3637IH
M-580CT
SB5-5480IH
S4-120SBA
catalytic
SB5-1044IH
04 - 07 IC Rear Engine VT-365 & DT466 INT602
SB3-4003IH (VT-365)
SB3-4008IH (VT-466)
A
M-582CT
catalytic
(2 used)
SB3-4009IH
(VT-365)
A
SB4-4022IH (rear exit)
SB4-4021IH
(side exit)
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
27

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-351I
H-IHM4
H-IHP1
H-IHP3
WFC-4
H-IHM6
H-IHP5
WFC-35
05-06 6 Cyl. CE international w/ DT 466 Engine & VT-365 Engine INT603
SB3-8876IH
(DT466)
SB3-4023IH
(VT-365)
SB3-8860IH
M-580CT
catalytic
S4-18EXA
S4-120SBA
SB4-4892IH
SB6-4815IH (LH exit)
SB6-4810IH (RH exit)
S4-120SBA
00-02 6 Cyl. International DT 466 Engine, Left Side Exhaust System INT604
SB4-8594IH
M-536
S4-120SBA
SB4-4888IH
SB5-4006IH
2001 6 Cyl. Series 3800 w/ T444 Turbo Diesel, w/ Air Ride Suspension INT605
M-536
S4-120SBA
SB3-4898IH
SB6-8451IH
SB7-4670IH
SB8-3043IH
28
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

INTERNATIONAL
CLAMPS and HANGERS CHART
WFC-35
VB-351I
H-IHM6
H-IHP5
WFC-4
2001 6 Cyl. Series 3800 w/ 444 Turbo Diesel, w/ Spring Suspension
(Vari-Rate Suspension)
INT606
M-536
SB7-4671IH
SB8-3005IH
SB3-4898IH
S4-120SBA
SB6-8451IH
00-01 6 Cyl. Series 3800 w/ 466 Turbo Diesel, w/ Air Ride Suspension INT607
M-536
SB7-4670IH
SB8-3043IH
SB3-4898IH
S4-120SBA
SB5-8421IH
96-00 6 Cyl. Series 3800 w/ DT408, DT466 NGD Diesel; w/ Code 07ABC;
RH Exhaust; 152" W.B.
INT608
M-536
SB7-4661IH
SB8-3005IH
SB5-4821IH
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
29

INTERNATIONAL
CLAMPS and HANGERS CHART
H-IHM6
VB-302I
VB-351I
WFC-4
H-IHP5
H-IH7
VB-301I
WFC-35
94-02 8 Cyl. International; Amtran – T444E Rear Engine; Forward Control INT609
SB5-8443IH
(94-99)
SB3-8823IH
(00-02)
M-755
SB5-4132IH
(rear exit)
SB3-4883IH (side exit)
94-00 8 Cyl. Series 3600; w/ T444E Diesel; w/ Code 10NXW-Handicap Pkg.;
RH Rear Exit Tail Pipe; 152"-276" W.B.
INT610
M-536
SB7-4662IH
SB7-4663IH
(w/o air suspension)
(w/air suspension)
SB8-3005IH (w/air suspension)
SB5-8420IH
SB8-3014IH
(w/o air suspension)
94-00 6-8 Cyl. Series 3600, 3800; 6 Cyl. DT408, DT466E, 8 Cyl. T444E Diesel;
w/ Air Suspension; 152"-276" W.B. INT611
(DT408, DT466E)
(T444E)
M-536
SB7-4632IH
SB8-3014IH (RH exit)
SB5-8420IH (T444E)
SB5-8421IH (DT408, DT466E
w/o Allison MTB643 auto trans.)
SB5-8422IH (DT408, DT466E
w/ Allison MTB643 auto trans.)
SB3-4898IH
S4-120SBA
SB8-3029IH
(LH exit)
30
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-351I
VB-301I
H-IHM6
H-IHP5
WFC-4
WFC-35
94-00 6-8 Cyl. Series 3600, 3800; 6 Cyl. DT408, DT466E, 8 Cyl. T444E Turbo Diesel;
w/ Vari-Rate Suspension; 152"-276" W.B. INT612
(DT408, DT466E)
(T444E)
SB5-8420IH
(T444E)
SB5-8421IH
(DT408, DT466E)
M-536
SB3-4898IH
S4-120SBA
SB7-4646IH (LH exit)
SB7-4607IH (RH exit)
SB8-3005IH
94-00 6 Cyl. Series 3800; w/ DT408, DT466E Turbo Diesel; Code 07AAS;
Tail Pipe Exits Front of LH Rear Wheel; 152"-276" W.B.
INT613
SB3-8584IH
(152" W.B.)
SB4-8599IH
(193"-276" W.B.)
M-536
SB4-4822IH
S4-120SBA
SB5-8407IH
94-00 6 Cyl. Series 3800; w/ DT408, DT466E Turbo Diesel; w/ Code 07AAN;
LH Exit Tail Pipe; w/o Air Suspension; 152"-276" W.B.
INT614
SB5-8421IH
M-536
SB7-4664IH
(152" W.B.)
SB7-4646IH
(170"-276" W.B.)
SB8-3005IH
SB3-4898IH
S4-120SBA
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
31

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-351I
H-IHM6
WFC-4
H-IHP5
VB-301I
VB-302I
H-IH7
WFC-35
94-00 6 Cyl. Series 3800; w/ DT408, DT466E Turbo Diesel; w/ Code 07AAW;
w/ Allison MTB643, MTB653DR Auto. Trans.; LH Exit Tail Pipe;
w/o Air Suspension; 152", 170"-276" W.B.
SB5-8422IH
M-536
M-580CT
catalytic
SB3-4898IH
S4-120SBA
SB7-4646IH
SB8-3005IH
INT615
94-00 6 Cyl. Series 3600, 3800; w/ DT408, DT466E, T444E Diesel;
w/ Mor-Ryde Suspension (exc. RH Rear Exit Tail Pipe);
152", 170"-276" W.B. INT616
(DT408, DT466E)
(T444E)
SB5-8420IH (T444E)
SB5-8421IH (DT408, DT466E)
M-536
SB3-4898IH
S4-120SBA
SB7-4607IH
SB8-3005IH
94-00 6 Cyl. International; Amtran – DT 466 Rear Engine; Forward Control INT617
SB3-8847IH
M-755
SB5-4132IH (rear exit)
SB3-4883IH (side exit)
32
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

INTERNATIONAL
CLAMPS and HANGERS CHART
WFC-35
VB-350I
H-IHM6
WFC-4
H-IHP5
91-93 6 Cyl. Series "S"; 3700, 3800; w/ DT466, DTA466 Diesel Eng.;
Allison MTB643 Auto. Trans; w/ Mor-Ryde or Vari-Rate Suspension;
w/o Air Suspension; Long Tail Pipe-Left Side Exit
INT618
M-536
SB7-4646IH
SB8-3005IH
SB4-8552IH SF-3518 SB4-8560IH
SB3-4898IH
S4-120SBA
(3½" flex)
91-93 6 Cyl. Series "S"; 3700, 3800; w/ DT466, DTA466 Diesel Eng.;
Allison MTB643 Auto. Trans; w/ Air Suspension;
Long Tail Pipe-Left Side Exit
SB4-8552IH
SF-3518
(3½" flex)
SB4-8565IH
M-536
SB3-4898IH
S4-120SBA
SB7-4632IH
SB8-3029IH
INT619
91-93 6 Cyl. Series "S"; 3700, 3800; w/ DT466, DTA466 Diesel Eng.;
Allison MTB643 Auto. Trans; w/ Air Suspension;
Long Tail Pipe - Right Side Exit
INT620
SF-3518 SB4-8565IH
SB4-8552IH
M-536
SB8-3014IH
(3½" flex)
SB3-4898IH
S4-120SBA
SB7-4632IH
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
33

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-351I
H-IHM6
WFC-4
H-IHP5
VB-350I
WFC-35
91-93 6 Cyl. Series "S"; 3700, 3800; w/ DT360, DTA360 Diesel Eng.;
Short Tail Pipe-Left Side Exit in Front of Rear Wheel
INT621
GF-3518
M-536
S4-120SBA
OR
S4-168SBA
N/A
(3½" flex)
SB4-8554IH
SB4-4822IH
91-93 6 Cyl. Series "S"; 3700, 3800; w/ DT466, DTA466 Diesel Eng.;
Short Tail Pipe-Left Side Exit in Front of Rear Wheel
INT622
GF-3518 SB4-8554IH
M-536
S4-120SBA
OR
S4-168SBA
N/A
(3½" flex)
SB4-4822IH
91-93 6 Cyl. 3900 FC Series; w/ DT360, DTA360 Diesel Eng.;
Short Tail Pipe-Left Side Exit in Front of Rear Wheel
91-93 6 Cyl. 3900 FC Series; w/ DT466, DTA466 Diesel Eng.;
Short Tail Pipe-Left Side Exit in Front of Rear Wheel
INT623
(DT360, DTA360)
(DT466, DTA466)
SB7-8228IH
(DT360, DTA360)
SB7-8229IH
(DT466, DTA466)
M-536
SB3-4898IH
S4-120SBA
SB6-4763IH
34
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-351I
VB-350I
H-IHM6
H-IHP5
WFC-4
WFC-35
PF-275
OMH-8511
91-93 6 Cyl. 3900 FC Series; DT/DTA360, DT/DTA466 Diesel Eng.;
w/o Air Suspension; Long Tail Pipe
INT624
(DT, DTA360)
(DT, DTA466)
SB7-8228IH
(DT, DTA360)
SB7-8229IH
(DT, DTA466)
M-536
SB3-4898IH
S4-120SBA
SB7-4646IH (LH exit)
SB7-4607IH (RH exit)
SB8-3005IH
91-93 6 Cyl. 3900 FC Series; DT/DTA360, DT/DTA466 Diesel Eng.;
w/ Air Suspension; Long Tail Pipe INT625
(DT, DTA360)
(DT, DTA466)
SB7-8228IH
(DT, DTA360)
SB7-8229IH
(DT, DTA466)
M-536
SB3-4898IH
S4-120SBA
SB7-4632IH
SB8-3029IH (LH exit)
SB8-3030IH (RH exit)
91-93 6 Cyl. Series 3700, 3800; w/ 7.3L Diesel; LH Side Exit in Front
of Rear Wheel;152"-276" W.B.
N/A N/A N/A
OMH-8511
M-185
SB4-4822IH
INT626
(2¾" flex)
N/A N/A N/A
(2¾" flex)
SB3-4898IH
S4-120SBA
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
35

INTERNATIONAL
CLAMPS and HANGERS CHART
WFC-35
OMH-8511
H-IHP5
VB-351I
WFC-4
88-93 8 Cyl. Series "S"; 3600, 3700; 7.3L Diesel Eng.; w/o Air Susp.; RH Mounted Tail Pipe
88-93 8 Cyl. Series "S"; 3600, 3700; 7.3L Diesel Eng.; w Air Susp.; RH Mounted Tail Pipe INT627
SB6-8221IH
M-185
SB7-4607IH
(w/o air suspension)
SB7-4632IH
(w/air suspension)
SB8-3014IH (w/air suspension)
(gaskets
N/A)
SB5-8330IH
SB3-4898IH
S4-120SBA
SB8-3005IH
(w/o air suspension)
88-93 8 Cyl. Series "S"; 3600, 3700; 7.3L Diesel Eng.; w/o Air Susp.; LH Mounted Tail Pipe
88-93 8 Cyl. Series "S"; 3600, 3700; 7.3L Diesel Eng.; w Air Susp.; LH Mounted Tail Pipe INT628
SB6-8221IH
M-185
SB7-4607IH
(w/o air suspension)
SB7-4632IH
(w/air suspension)
SB8-3029IH
(w/air suspension)
(gaskets
N/A)
SB5-8330IH
SB3-4898IH
S4-120SBA
SB8-3005IH
(w/o air suspension)
87-93 6 Cyl. Series "S"; 3600, 3700, 3800; DT/DTA360 Diesel Eng.; w/o Air Susp.
w/ Mor-Ryde or Vari-Rate Susp.; Long Tail Pipe - Left Side Exit
87-93 6 Cyl. Series "S"; 3600, 3700, 3800; DT/DTA360 Diesel Eng.;
w/o Air Susp.; Long Tail Pipe - Right Side Exit
INT629
SB5-8285IH
(before 1/1/88)
SB5-8349IH
(after 1/1/88)
M-536
SB7-4646IH (LH exit)
SB7-4632IH (RH exit)
SB8-3005IH
SB3-4898IH
S4-120SBA
36
*Side Exit Pipes pg. 45
1-800-321-3674
www.grandrock.com

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-351I
H-IHM6
WFC-4
H-IHP5
VB-350I
WFC-35
87-93 6 Cyl. Series "S"; 3700, 3800; DT/DTA360 Diesel Eng.; w/ Air Susp.;
Long Tail Pipe - Left Side Exit
87-93 6 Cyl. Series "S"; 3600, 3700, 3800; DT/DTA360 Diesel Eng.; w/ Air Susp.;
Long Tail Pipe - Right Side Exit
INT630
SB5-8349IH
(after 1/1/88)
SB5-8285IH
(before 1/1/88)
M-536
SB7-4632IH
SB8-3029IH (LH exit)
SB3-4898IH
S4-120SBA
SB8-3014IH
(RH exit)
87-93 6 Cyl. Series "S"; 3700, 3800; DT/DTA466 Diesel Eng.; w/ Mor-Ryde or Vari-Rate Susp.;
exc. Allison MTB643 Auto. Trans.; Long Tail Pipe - Left Side Exit
87-93 6 Cyl. Series "S"; 3700, 3800; DT/DTA466 Diesel Eng.; w/o Air Susp.;
exc. Allison MTB643 Auto. Trans.; Long Tail Pipe - Right Side Exit INT631
SB5-8225IH
M-536
SB7-4607IH (RH exit)
SB7-4646IH (LH exit)
SB8-3005IH
SB3-4898IH
S4-120SBA
87-93 6 Cyl. Series "S"; 3700, 3800; DT/DTA466 Diesel Eng.; w. Air Susp.;
exc. Allison MTB643 Auto. Trans.; Long Tail Pipe - Right Side Exit
87-93 6 Cyl. Series "S"; 3700, 3800; DT/DTA466 Diesel Eng.; w. Air Susp.;
Long Tail Pipe - Left Side Exit
INT632
SB5-8225IH
M-536
SB3-4898IH
SB7-4632IH
S4-120SBA
SB8-3029IH (LH exit)
SB8-3014IH
(RH exit)
1-800-321-3674
www.grandrock.com
*Side Exit Pipes pg. 45
37

INTERNATIONAL
CLAMPS and HANGERS CHART
PF-275
G-IH3 H-IHP5
OMH-8511 WFC-4
80-89 8 Cyl. Model 1853; 9.0L Diesel Eng. INT633
SB3-8268IH
SB3-8269IH M-185
SB5-8219IH
SB3-4898IH
S4-120SBA
SB7-4607IH
SB8-3005IH
83-88 8 Cyl. Series "S"; 6.9L Diesel Eng.; w/o Air Susp.; RH Mounted Tail Pipe
83-88 8 Cyl. Series "S"; 6.9L Diesel Eng.; w Air Susp.; RH Mounted Tail Pipe INT634
(gaskets
N/A)
SB6-8221IH
M-185
SB7-4632IH
(w/air suspension)
SB7-4607IH
(w/o air suspension)
SB8-3014IH (w/air suspension)
SB5-8251IH
SB3-4898IH
S4-120SBA
SB8-3005IH
(w/o air suspension)
83-88 8 Cyl. Series "S"; 6.9L Diesel Eng.; w/o Air Susp.; LH Mounted Tail Pipe
83-88 8 Cyl. Series "S"; 6.9L Diesel Eng.; w Air Susp.; LH Mounted Tail Pipe INT635
(gaskets
N/A)
SB6-8221IH
M-185
SB3-4898IH
N/A
N/A
SB5-8251IH
S4-120SBA
80-87 8 Cyl. Model 1853; w/ 3208 Eng. INT636
N/A
N/A
(2¾" flex)
N/A
M-185
SB3-4898IH
S4-120SBA SB7-4607IH
N/A
N/A
N/A
(2¾" flex)
N/A
N/A
38
1-800-321-3674
www.grandrock.com

INTERNATIONAL
CLAMPS and HANGERS CHART
VB-350I
OMH-8511
H-IHP5
WFC-4
WFC-35
PF-275
79-87 6 Cyl. Model 1853; DT466 Diesel Eng. INT637
SB5-8225IH
M-536
SB3-4898IH
S4-120SBA
SB7-4607IH
SB8-3005IH
1979 8 Cyl. Models D150, D170, D190 After 1-10-79
(exc. Aux. Spicer 4 Speed Transmission Code 13552);
152", 170", 193", 218", 236", 254" & 276" W.B. INT638
N/A
N/A
M-185
S4-168SBA
SB7-4607IH
SB8-3005IH
N/A
N/A
1-800-321-3674
www.grandrock.com
39

THOMAS
CLAMPS and HANGERS CHART
VB-275C
H-THM1
WFC-4
VB-461D
RMH-7
VB-413C
H-THM2
WFC-3
98-02 6 Cyl. Thomas MVP E-F, B-Series Cummins Engine Forward TH700
SB2-8721TH
SF-318
(3" flex)
SB5-8466TH
98-01 6 Cyl. Thomas Pusher 3126 Cat. Eng. TH701
M-127
SF-412
S4-168SBA
SB3-8787TH
SB6-4790TH
*footnote
S4-168SBA
SB3-8788TH
(4" flex)
SB4-4877TH (RH under bumper)
M-127
98-01 6 Cyl. Saf-T-Liner w/ 3126 Caterpillar Engine, 8.3L Cummins Engine TH702
(3126 Cat.)
SB3-8817TH (8.3 Cummins)
SB2-8719TH (3126 Cat.)
SF-412 (4" flex)
S4-6SBA
(8.3 Cummins)
K4-12EXA
M-626
94-01 6 Cyl. Thomas MVP E-F, B-Series Cummins (Non-Catalytic Muffler) TH703
SB3-8792TH
(98-01 ISB Cummins)
SB3-8791TH
(94-97)
M-110 (94-97)
M-127 (98-01)
S4-168SBA
SB6-4790TH
S4-168SBA
*footnote
40
*See pg. 44 for Air Ride Overaxles and Side Exit
Tailpipe. = (100 gal. fuel tank use 2 piece Overaxle
Pipes on pg. 44 for easy installation
1-800-321-3674
www.grandrock.com
*See pg. 44 for Overaxles and
Tailpipe Options

THOMAS
CLAMPS and HANGERS CHART
WFC-35
H-THM1
VB-275C
WFC-4
WFC-3
97-00 6 Cyl. Thomas MVP E-F, 3126, C7 Caterpillar Engine Forward TH704
SB7-8246TH
OR
M-127
S4-120SBA
SB6-4790TH
S4-120SBA
SB4-4001TH (C7 OE# 6224-1177)
SB4-4024TH (3126 OE# 6224-1178)
SF-412
S4-120SBA
OR
*See pg. 44 for Air Ride Overaxles and Side Exit
Tailpipe. = (100 gal. fuel tank use 2 piece Overaxle
Pipes on pg. 44 for easy installation
SB6-4025TH (OE# 6224-1132)
97-98 6 Cyl. MVP-ER Model; w/ 5.9L Cummins Turbo Diesel;
Rear Eng.; RH Rear Exit Tail Pipe
TH705
SB3-8770TH
SB3-4881TH
(through bumper)
SB3-4880TH
(under bumper)
catalytic
N/A
SF-318
3" flex
SB2-8667TH
96-98 6 Cyl. MVP-ER Model w/ Cat. 3116 Turbo Diesel;
Rear Eng.; RH Below Bumper Exit
SB3-8769TH
TH706
SB1-8152TH
SF-412
SB3-4880TH
catalytic
N/A
1-800-321-3674
www.grandrock.com
*See pg. 44 for Overaxles and
Tailpipe Options
41

THOMAS
CLAMPS and HANGERS CHART
VB-275C
VB-461D
OMH-1015
WFC-4
WFC-5
WFC-3
WFC-35
96-98 6 Cyl. Rear Engine Models w/ B-Series Cummins
Engine w/ Standard Muffler
TH707
SB3-8819TH
SF-312
M-110
(3" flex)
SB2-8720TH
*Tailpipe Options pg. 44
92-95 6 Cyl. MVP Model w/ Cat. 3116 Turbo Diesel; Rear Eng. TH708
SB1-8151TH
SF-418 (4" flex)
M-125
SB2-8664TH
K4-12SBA
90-93 6 Cyl. Saf-T-Liner w/ 6V92 Rear Engine Model; Rear Exit Tail Pipe TH709
N/A
N/A
SF-518 M-147
(5" flex)
N/A
N/A
42
*See pg. 44 for Overaxles and
Tailpipe Options
1-800-321-3674
www.grandrock.com

THOMAS
CLAMPS and HANGERS CHART
WFC-4
OMH-1015
VB-475D
OMH-8511
89-93 6 Cyl. All models w/ Cummins 6BTA, 6CTA; Rear Eng.; Rear Exit Tail Pipe TH710
N/A
SB1-8150TH (6CTA w/o pyrometer)
SB1-8165TH (6BTA)
SF-418
(4" flex)
M-125
K4-12SBA (under bumper)
SB2-4945TH (through bumper)
SB3-8764TH (6BTA)
SB3-8763TH (6CTA)
89-93 8 Cyl. Saf-T-Liner w/ 8.2L Turbo Diesel; Rear Eng. Model; Left Side Exit TH711
N/A
N/A
SB2-8523TH
SF-408
SB2-8524TH
SB2-8660TH (w/ pyrometer)
M-115
89-93 8 Cyl. Saf-T-Liner w/ 8.2L Turbo Diesel; Rear Eng. Model; Rear Exit Tail Pipe TH712
SB2-8523TH
SF-408
(4" flex)
SB2-8660TH
(w/ pyrometer)
M-153 SB1-4705TH
SB2-8524TH
1-800-321-3674
www.grandrock.com
*See pg. 44 for Overaxles and
Tailpipe Options
43

ACCESSORIES
THOMAS PULLER AIR RIDE OVERAXLE PIPES
SB5-8447TH
(OE# 6224-0589)
SB5-8448TH
(OE# 6224-0590)
SB5-8465TH
(OE# 6224-0599)
SB5-8467TH
(OE# 6224-0752)
SB5-8449TH
(OE# 6224-0771)
SB3-4014TH
(OE# 6224-0977)
SB5-0978TH
(OE# 6224-0978)
THOMAS MVP 4" SIDE EXIT TAIL PIPE
SB6-4809TH (w/ turndown)
SB4-4878TH (w/o turndown)
THOMAS MVP PUSHER - TAIL PIPE OPTIONS
SB4-4877TH
SB4-4879TH
SB2-4011TH
(OE# 6224-0962)
SB4-4026TH
(OE# 6224-0961)
SB2-4985TH
K4-36EXA
44
1-800-321-3674
www.grandrock.com

ACCESSORIES
UNIVERSAL SIDE EXIT TAIL PIPE
Right Hand Muffler with 4" I.D. Outlet - Over Drive Shaft - Exit on Left Hand Side of Bus in Front of Rear Wheels
Tail Pipe: SB5-5466SE
Tail Pipe Hanger:H-USE1
Tail Pipe Bracket: H-USE2
Tail Pipe Clamp: H-IHP5
UNIVERSAL STAINLESS STEEL BELLOWS PIPE
Part No. Diameter Length
GBS-312 3" 10"
GBS-3512 3½" 10"
GBS-412 4" 10"
GBS-512 5" 10"
INTERNATIONAL CONVENTIONAL & FLATNOSE TAIL PIPE OPTIONS
center-to-center
4" I.D.
SB3-4901IH
(Optional through Bumper)
UNIVERSAL SIDE EXIT PIPES
O.E./MAKE ENG.
DESCRIPTION
OUTLET
TYPE
PIPE O.D.
4" 5"
STYLE
International w/o Turndown SB8-4559IH A
w/ Turndown SB8-4584IH B
Bluebird TC-2000,
Cummins 5.9
w/o Turndown SB7-4633BB A
A
B
C
98-02 Bluebird
All American
Angle Cut SB7-4669BB A
Freightliner w/o Turndown SB8-3052FL C
1-800-321-3674
www.grandrock.com
45

THE PREMIER PRE-FORMED BAND CLAMP
Built by Westfalia for Grand Rock (lap joint connections)
Step design for all lap joints
• Clamps come assembled with reversible
Grade 8 Hardware
• Won’t distort or pinch flexible or standard tubing
• Virtually leak-free, low emission
• 53% Thicker than the competition
• OEM Recommended
• Bright 304 Stainless and Aluminized
Flap isolates
closing seam -
reduces leakage
SIZE & PART #
ALUMINIZED
STAINLESS STEEL
Diameter Aluminized Part # Stainless Part #
Unique reversable Grade 8 Hardware
3 inch* n/a WFC-3
3½ inch* n/a WFC-35
4 inch* WFC-4A WFC-4
5 inch* WFC-5A WFC-5
* Not Bright Finish
WESTFALIA TRIPLE-S FLEX HOSE
Square-cut and deburred ends
Moves Easily
in both
compression
and expansion
Extension Strap Gauge
perfect installation lengthtakes
guesswork out of
proper installed length
(discard after installation)
BLOWS AWAY ANY FLEX
YOU’VE EVER SEEN!
• 304 Stainless (the good stuff)
• Moves easily in both compression & expansion
• Torsional Movement (twists)
• Double wall construction is almost leak-free &
low emission
• In-between lengths to fit any flex application —
eliminates cutting
• Easier movement = much easier installation
• Individually boxed with installation instructions
• Longer life than other flex types
• Lengths shown are installed overall length
Dia. Length Part #
TYPE SSS (33% THICKER)
• SPECIAL INTERLOCKED PROFILE •
(Conventional Interlocked Profile)
4 12 WFF-412
4 15 WFF-415
4 18 WFF-418
4 21 WFF-421
4 24 WFF-424
5 12 WFF-512
5 15 WFF-515
5 18 WFF-518
5 21 WFF-521
5 24 WFF-524
46
1-800-321-3674
www.grandrock.com

TURBO & MANIFOLD OUTLETS
TYPE A
Part No.
TURBO & MANIFOLD OUTLETS
Part
Length
Tube
Dia.
Flange
Dia.
Fits
Use V-Band
Clamp No.
T321-2 2" 2-3/4" 3.21" 5.9B cummins VB-321C
T375-6 6" 3" 3.75" — —
T400-6 6" 3-1/2" 4.00" Detroit Diesel —
T407-4 4" 3-1/2" 4.07" 3208T Cat VB-419C
T425-4 4" 3-1/2" 4.25" 7.3 Ford Powerstroke VB-429F6
T450-6 6" 4" 4.5" Cummins VB-413C
T461-4 4" 4" 4.61" 3306 Cat VB-461D
T461-4 4" 4" 4.61" Most 6 Cyl. Macks VB-461M
T475-4 4" 4" 4.75" L10 Cummins & 3176 Cat VB-475C
T475-4 4" 4" 4.75" 8.2T Detroit VB-475D
T525-4 4" 5" 5.25" 6V & 8V92T Detroit VB-525D
T550-6 6" 5" 5.5" N14 & ISX Cummins VB-525D
T588-6 6" 5" 5.88" 3406 & C15 Cat VB-588C
T588-6 6" 5" 5.88" 855 C.I. Cummins W/T50 Turbo VB-588C
T588-6 6" 5" 5.88" 60 Series Detroit VB-588C
TYPE A
TUBE DIA.
O.D.
FLANGE DIA.
PART
LENGTH
22 o
TYPE B
TYPE B
Part No.
Part
Length
Tube
Dia.
Flange
Dia.
Fits
T362-6ID 6" 3" O.D./3" I.D. 3.62" D.D. 6V71
T425-6ID 6" 3-1/2" O.D./3-1/2" I.D. 4.25" D.D. 8V71
T475-6ID 6" 4" O.D./4" I.D. 4.75" D.D. 671/12V71
If a Pyrometer fitting is needed, add "PYRO" to the part number.
All of these parts are aluminized.
TURBO REPAIR FLANGES
Replaces cracked flanges
A
C (I.D.)
Part No.
A
Dia.
B
Length
C
Dia.
ID
Application
B
TRF-4625 4.625” 2” 4” Replaces Cat#9N-6325
TRF-475 4.75” 2” 4” T35 Turbo, L10 & 3176
TRF-588 5.88” 2” 5” T50 Turbo, N14, ISX, 3406, C15, 60 Series
1-800-321-3674
www.grandrock.com
47

V-BAND CLAMPS
MANUFACTURER P/N TUBE DIA. A B C APPLICATION BREEZE P/N
UNIVERSAL
VB-525D 5.00 5.25 5.81 0.21 FITS - FLARED CONNECTORS. VT10525
AIRESEARCH
VB-461M 4.00 4.17 4.61 0.21 TEO-699 VT10461
VB-525D 5.00 5.25 5.81 0.21 T-1899, TH08A64 VT10525
BLUEBIRD
VB-275C 2.75 2.80 3.20 0.26 6BT5.9L, 6BTA5.9L REPLACES BLUEBIRD #1334226
VB-275C 2.75 2.80 3.20 0.26 94-98 BLUEBIRD TC2000 SCHOOL BUS W/5.9L
VB-413C 4.00 4.13 4.69 0.26 92-98 8.3L TURBO CUMMINS ALL AMERICAN VT10413
VB-461D 4.00 4.13 4.69 0.40 REPLACES BLUEBIRD #1250646 VT10469
VB-461D 4.00 4.13 4.69 0.40 BLUEBIRD ALL AMERICAN W/CAT3116 /TURBO VT10469
CATERPILLAR
VB-419C 3.50 3.63 4.19 0.40 3208T# IW5455 VB10419
VB-461D 4.00 4.13 4.69 0.40 3208T # IW2431 VT10469
VB-475C 4.00 4.19 4.75 0.40 3176T VT10475
VB-588C 5.00 5.32 5.88 0.40 3406, 3406B, 3176,T50 TURBO # 186917 VT10588-1
CUMMINS
VB-275C 2.75 2.80 3.20 0.26 6BT5.9L, 6BTA5.9L # 3903652
VB-351I 3.50 3.69 4.25 0.40 VT555, VT-555 MANIFOLD
VB-413C 4.00 4.13 4.69 0.26 8.3C CUMMINS # 3905216 BLUEBIRD ALL-AMERICAN VT10413
VB-475C 4.00 4.19 4.75 0.40 L10 # 115774 VB10475
VB-532 5.00 5.33 5.53 0.24 04-07 5.9L CUMMINS# 52121285AA
VB-588C 5.00 5.32 5.88 0.40 750, N, 88NT, NTC, VT, T50 TURBO # 186916 VT10588-1
DETROIT DIESEL
VB-475D 4.00 4.13 4.75 0.16 8.2LT # 154977
VB-525D 5.00 5.25 5.81 0.21 8V-71T, 16V-71, 6V-92T, 8V-92, 8V-92T, 16V-92T # 513262 VT10525
VB-588C 5.00 5.32 5.88 0.40 SERIES 60, 6-71T # 23506159 VT10588-1
DODGE
VB-450 4.00 4.53 4.73 0.26 DODGE 03-04 5.9L CUMMINS # A49-3535399
VB-532 5.00 5.33 5.53 0.24 04-07 5.9L CUMMINS# 52121285AA
FORD
VB-275C 2.75 2.80 3.20 0.26 93-95 B600/700 W/5.9LT
VB-275C 2.75 2.80 3.20 0.26 REPLACES FORD #F3HZ5A281A
VB-351I 3.50 3.69 4.25 0.40 REPLACES FORD #E7HZ5A231C
VB-384F 3.00 3.84 4.01 0.23 FORD # F6TA-5A281-BA / 94-97 7.3 POWERSTROKE
VB-419C 3.50 3.63 4.19 0.40 REPLACES FORD #E2HZ5A231A VB10419
VB-419C 3.50 3.63 4.19 0.40 87-90 B600/700 SCHOOL BUS CF600/800 W/6.6LT VB10419
VB-419C 3.50 3.63 4.19 0.40 REPLACES FORD #E8HZ5A231E VB10419
VB-419F 3.50 3.63 4.19 0.40 FORD 6.6& 7.8 # E2HZ5A231A VB10419
VB-429F6 4.00 4.37 4.56 0.28 FORD 03-07 6.0L POWERSTROKE # 6C34-5A281-AA
VB-429F7 4.00 4.38 4.55 0.23 FORD 99-03 7.3L POWERSTROKE # 4C24-5A281-HA
VB-475D 4.00 4.13 4.75 0.16 REPLACES FORD #EOHZ5A231C VT10475
VB-532 5.00 5.33 5.53 0.24 04-07 5.9L CUMMINS# 52121285AA
FREIGHTLINER
VB-475C 4.00 4.19 4.75 0.40 FREIGHTLINER BUS W/MERCEDES 6 CYL. ENG.
VB-588C 5.00 5.32 5.88 0.40 FLD MODELS W/DD SERIES 60, CAT 3406 #04-13828-0000 VT10588-1
VB-588C 5.00 5.32 5.88 0.40 FLD MODELS W/CUMMINS NTC, VT DIESEL # 01-14596-000 VT10588-1
VB-588C 5.00 5.32 5.88 0.40 REPLACES FREIGHTLINER #0114596000 VT10588-1
GM
VB-384G 3.00 3.84 4.01 0.21 00-06 DURAMAX # 15671559
VB-525D 5.00 5.25 5.81 0.21 TOPKICK/KODIAK W/6.6L # 2011586 VT10525
VB-525D 5.00 5.25 5.81 0.21 REPLACES GM #15647159 VT10525
INTERNATIONAL
VB-301I 3.00 3.28 3.84 0.40 T444E 1994-2000 INTERNATIONAL BUS
VB-302I 3.00 3.28 3.82 0.21 REPLACES INTERNATIONAL #2033978C1
VB-351I 3.50 3.69 4.25 0.40 86-89 SERIES S TRUCK/BUS W/DT360
VB-351I 3.50 3.69 4.25 0.40 REPLACES INTERNATIONAL #893944R92
VB-350I 3.50 3.77 4.33 0.21 REPLACES INTERNATIONAL #338614C1
VB-350I 3.50 3.77 4.33 0.21 88-94 SERIES S TRUCK BUS W/DT466
VB-475C 4.00 4.19 4.75 0.40 REPLACES INTERNATIONAL #893945R92 VT10475
48
1-800-321-3674
www.grandrock.com

V-BAND CLAMPS
MANUFACTURER P/N TUBE DIA. A B C APPLICATION BREEZE P/N
INTERNATIONAL, continued
VB-475C 4.00 4.19 4.75 0.40 7.3L, DT-DTA 360, DT-DTA 466 VB10475
VB-525D 5.00 5.25 5.81 0.21 9300 SERIES W/DD 8V71, 8V92 VT10525
VB-525D 5.00 5.25 5.81 0.21 REPLACES INTERNATIONAL #5132650 VT10525
VB-525D 5.00 5.25 5.81 0.21 REPLACES INTERNATIONAL # 780067C91 VT10525
VB-588C 5.00 5.32 5.88 0.40 REPLACES INTERNATIONAL #390226C91 VT10588-1
VB-588C 5.00 5.32 5.88 0.40 INTERNATIONAL #1672105C91 VT10588-1
MACK
VB-461M 4.00 4.17 4.61 0.16 REPLACES MACK #48RU2341 VT10461
VB-461M 4.00 4.17 4.61 0.16 DM/MR MODELS VT10461
VB-588C 5.00 5.32 5.88 0.40 REPLACES MACK #11ME241 VT10588-1
THOMAS
VB-419C 3.50 3.63 4.19 0.40 84-90 SAF-T-LINER MODELS W/3208T VB10419
VB-419C 3.50 3.63 4.19 0.40 REPLACES THOMAS #61240207 VB10419
VB-461D 4.00 4.13 4.69 0.40 84-89 THOMAS SCHOOL BUS W/ 3208T VT10469
VB-461D 4.00 4.13 4.69 0.40 REPLACES THOMAS #61240208 VT10470
VB-475D 4.00 4.19 4.75 0.21 89-93 THOMAS SCHOOL BUS W/8.2LT
VB-475D 4.00 4.19 4.75 0.21 REPLACES THOMAS #61240209
Part No.
VB-588OE
Application
V-BAND CLAMP
T50 Turbohousings, N14, ISX, 3406, C15, 60Series
This is the more economical 1 pc OE version
ROUND BOLT
OPEN
SADDLE
(Economy)
ROUND BOLT
CLOSED SINGLE
SADDLE
(Good)
ROUND BOLT
CLOSED DOUBLE
SADDLE
(Better)
FLAT BOLT
CLOSED DOUBLE
SADDLE
(Best)
Dia.
ROUND BOLT
OPEN SADDLE
Economy Clamp
(Plain Steel)
HD GUILLOTINE
SINGLE EDGE
SADDLE
(Zinc Plated)
HD GUILLOTINE
SINGLE EDGE
SADDLE
(Chrome)
ROUND BOLT
HD WELDED
SADDLE
(Zinc Plated)
FLAT BOLT
HD WELDED
SADDLE
(Zinc Plated)
FLAT BOLT
HD WELDED
SADDLE
(Chrome)
1-1/2" RO-15 — — — — —
1-5/8" RO-158 — — — — —
1-3/4" RO-175 — — — — —
1-7/8" RO-178 — — — — —
2" RO-2 RB-2ZN — HD-2ZN — —
2-1/4" RO-225 RB-225ZN — — — —
2-1/2" RO-25 RB-25ZN — HD-25ZN — —
2-3/4" RO-275 RB-275ZN — — — —
3" RO-3 RB-3ZN RB-3C HD-3ZN FB-3ZN —
3-1/4" RO-325 RB-325ZN — — — —
3-1/2" RO-35 RB-35ZN RB-35C HD-35ZN FB-35ZN —
4" RO-4 RB-4ZN RB-4C HD-4ZN FB-4ZN FB-4C
4-1/2" RO-45 RB-45ZN — HD-45ZN — —
5" RO-5 RB-5ZN RB-5C HD-5ZN FB-5ZN FB-5C
6" — RB-6ZN RB-6C HD-6ZN FB-6ZN FB-6C
7" — — — — — FB-7C
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49

CLAMPS
3 3 /8" WIDE 3" WIDE 3" WIDE 3" WIDE 1 1 /4" WIDE 3" WIDE
Flexible
Seal Clamps
ValuSeal
Clamps*
EasySeal
Clamps*
TorcTite
Preformed
Clamps*
AccuSeal
Clamps*
Westfalia
Clamps
(Good) (Better) (Better) (Better) (Best) (Best)
Aluminized Stainless Dull Bright Aluminized Stainless Bright Aluminized Bright Aluminized
Dia. Part # Part # Stainless Stainless Part# Part # Stainless Part# Stainless Part# Staineless
Part# Part# Part # Part#
2" — FL-2 — EZ-2 PF-2A PF-2 — AS-2A — — —
2-1/4" — FL-225 — EZ-225 PF-225A PF-255 — — — — —
2-1/2" — FL-25 — EZ-25 PF-25A PF-25 — AS-25A — — —
2-3/4" — FL-275 — EZ-275 PF-275A PF-275 — — — — —
3" — FL-3 — EZ-3 PF-3A PF-3 — AS-3A — — WFC-3**
3-1/2" — FL-35 — EZ-35 PF-35A PF-35 — AS-35A — — WFC-35**
4" FL-4A FL-4 VS-4** EZ-4 PF-4A PF-4 — AS-4A AS-4P WFC-4A WFC-4**
4-1/2" — FL-45 — EZ-45 — — — — — — —
5" FL-5A FL-5 VS-5** EZ-5 PF-5A PF-5 PF-5P AS-5A AS-5P WFC-5A WFC-5**
6" — FL-6 — EZ-6 — — PF-6P — AS-6P — —
7" — — — FL-7P — — — — AS-7P — —
* Original TORCA product.
** NOT bright finish
AccuSeal, TorcTite Valueseal, and EasySeal are all trademarks of Torca Products.
50
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FLEXIBLE METAL HOSE
10' and 25' COILS
Dia.
Std. Duty
Galvanized
25' Roll
Std. Duty
Galvanized
10' Roll
Heavy Duty
Galvanized
25' Roll
Heavy Duty
304 Stainless
10' Roll
Heavy Duty
304 Stainless
25' Roll
1.5" — — — — SF-15300
2" G15-2300 — — — —
2.25" G15-225300 — — — —
2.5" G15-25300 GF-25120 — — SF-25300
2.75" G15-275300 — — — SF-275300
3" G15-3300 GF-3120 — SF-3120 SF-3300
3.5" G15-35300 GF-35120 — SF-35120 SF-35300
4" G15-4300 GF-4120 G18-4300 SF-4120 SF-4300
5" G15-5300 GF-5120 G18-5300 SF-5120 SF-5300
6" — GF-6120 — SF-6120 SF-6300
7" — — — SF-7120 —
We are pleased to announce the arrival of the Westfalia Stainless Flex Hoses!
Superior flexability and torsional movement make this the finest flex the
industry has ever seen!
Dia.
PRECUT LENGTHS
Length
Heavy Duty
Galvanized
Heavy Duty
304 Stainless
Various Pre-Cut Lengths:
• Deburred Ends
• Save the Time and Hassle of Cutting
• Easier to Inventory and Handle
• Easier to Display
3" 12" GF-312 SF-312
3" 18" GF-318 SF-318
3" 24" GF-324 SF-324
3" 36" GF-336 SF-336
3.5" 12" GF-3512 —
3.5" 18" GF-3518 SF-3518
3.5" 24" GF-3524 SF-3524
3.5" 36" GF-3536 SF-3536
4" 8" — SF-408
4" 12" GF-412 *SF-412
4" 18" GF-418 *SF-418
4" 24" GF-424 *SF-424
4" 36" GF-436 *SF-436
4" 48" GF-448 *SF-448
5" 12" GF-512 *SF-512
5" 18" GF-518 *SF-518
5" 24" GF-524 *SF-524
5" 36" GF-536 *SF-536
5" 48" GF-548 *SF-548
MADE IN
THE USA
NOTE: All Grand Rock Flex is measured in EXTENDED lengths.
• Compression may occur during handling and transit
* Marked stainless flex is a superior quality genuine
Westfalia product manufactured in the USA for Grand Rock.
1-800-321-3674
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51

BRACKETS
4" FORD DIESEL
TAIL PIPE HANGER
PIPE HANGERS
P/N FITS BODY DIAMETER
PH-3 3"
PH-35 3 ½"
PH-4 4"
PH-5 5"
PH-6 6"
H-FTP1
H-FLM1
Muffler Hanger
Fits 11-1/8" body dia.
OE# 04-17998-001
HD MUFFLER HANGER
P/N FITS BODY DIAMETER
QPM-8H 8"
MUFFLER HANGERS
P/N STYLE FITS BODY DIAMETER
RMH-7834 B 7"-8 ¾"
RMH-6 A 6"
RMH-7 A 7"
RMH-8 A 8"
RMH-85 A 8 ½"
RMH-9 A 9"
RMH-10 A 10"
OMH-8511 A 8 ¼"x11 ½"
OMH-1015 A 10"x15"
RMH-11 C 11"
RMH-12 A 12" STYLE A STYLE B STYLE C
FREIGHTLINER HANGERS
H-FLP1
H-FLP3
H-FLM2
Muffler Hanger
04 & Newer
OE# A04-20919-000
RS-FRL1
Rubber Mount
04 & Newer
OE# 04-19919
H-IHP1
Rubber Mount
05 & Newer
International
H-FLP4
H-FLP5
52
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BRACKETS
H-10C
H-17 H-10
SWIVEL HANGERS
P/N TYPE LENGTH BOX QTY
H-10C REG. CLOSED 9 ½" 1
H-17 LONG CLOSED 17 ¼" 1
H-10 REG. OPEN 9 ½" 1
HD-11
UNIVERSAL HEAVY DUTY
HANGER AND BRACKET
P/N LENGTH PIPE DIA
HD-10
HD-14
HD-10 10" 3"-4"
HD-14 14"
HD-11 10"
HD-12 12"
CHEVROLET/GMC
FRAME BRACKET
HD-12
BLUEBIRD TAILPIPE HANGERS
H-BBT5
1989 & NEWER 366 GAS ENG.
H-BBM1
P/N LENGTH U-BOLT
H-BBP3 5 " 4" & 5"
H-BBP4 9 ¼" 4" & 5"
H-BBM1
H-BBM5
H-BBM2
H-BMM2
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53

BRACKETS
BLUEBIRD/CHEVROLET/GMC DIESEL MUFFLER STRAP
20¼"
15"
1¼"
3/8" Threaded Rod (H-GM1 shown)
PART NO.
OVERALL ROD
STRAP
LENGTH SIZE THICKNESS
H-GM1 20.25" 3/8" 1.25"
H-BBM2 27" 3/8" 1.25"
H-BBM3 31" 3/8" 1.25"
H-BBM4 26" 3/8" 1.25"
CHEVROLET/GMC
OVERAXLE HANGER ASSEMBLY
FORD MUFFLER HANGERS
THOMAS HANGERS
H-THM2
H-BBP2
FRAME BRACKET
H-BBP1
U-SHAPED HANGER
H-FTM2
Fits All Diesel Mufflers 83-UP
11" Round
H-THM1
INTERNATIONAL BRACKETS (EXTRA HEAVY DUTY REINFORCED)
RUBBING BUSHING
H-IHP6
OVERAXLE BRACKET
(not included in complete set)
IH SLEEVE
RUBBING BUSHING
H-IH7
COMPLETE SET
(tailpipe bracket, bushings, IH sleeve)
H-IHP3
H-IHP4 (3")
H-IHP5 (4")
PIPE HANGERS
H-IHM6 (7.3L)
MUFFLER HANGERS (88-UP)
H-IHM1 (96-UP)
T444E ENG. (FORWARD)
REAR MUFFLER HANGER
H-IHM2 (96-UP)
T444E ENG. (FORWARD)
FRONT MUFFLER HANGER (BIG HOLE)
H-IHM4
H-IHM6A
LENGTH IHC P/N STRAP LOCATIONS
4½ 1660539C91 TOP ROW OF HOLES
5 1660549C91 BOTTOM ROW OF HOLES
H-IHP7
AMTRAN T444E/DT466
REAR ENGINE
PART NO.
H-USE1
H-IHP5
H-USE2
H-IHP5
INTERNATIONAL NO.
482173C1
282400C1
1675835C1
54
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UNIVERSAL HEAT SHIELDS
UNIVERSAL HEAT SHIELDS:
• Heat shield for exhaust pipe
• Protect wires, air, oil or fuel lines
from extreme heat
• Universal fit, any diameter pipe
• Held on with strap clamp (included)
EXHAUST PIPE
EXHAUST PIPE
8"
EXHAUST PIPE
EXHAUST 1" gapPIPE
• Keep wiring, air, and hydraulic
lines away from hot exhaust pipes
• Works on 3"- 6" diameter pipes
PART NO.
UHS
UHS-B
QTY.
1 PER BOX
10 PER BOX
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55

STRAIGHT TUBING
O.D. / O.D.
Dia.
Length
Plain
Part No.
Aluminized
Part No.
Dia.
Length
Plain
Part No.
Aluminized
Part No.
2" 120" — S2-120SBA
2-1/4" 120" — S225-120SBA
2-1/2" 120" — S250-120SBA
2-3/4" 120" — S275-120SBA
3" 120" S3-120SB S3-120SBA
3-1/2" 120" S35-120SB S35-120SBA
4" 120" S4-120SB S4-120SBA
5" 120" S5-120SB S5-120SBA
6" 120" S6-120SB S6-120SBA
7" 120" S7-120SB S7-120SBA
8" 120" — S8-120SBA
10" 120" — S10-120SBA
3" 168" — S3-168SBA
3-1/2" 168" — S35-168SBA
4" 168" — S4-168SBA
5" 168" — S5-168SBA
I.D. / I.D.
Dia.
Length
Aluminized
Part No.
NOTE: Too Large for UPS, must ship by truck
3" 120" S3-120EXEXA
3-1/2" 120" S35-120EXEXA
4" 120" S4-120EXEXA
5" 120" S5-120EXEXA
6" 120" S6-120EXEXA
ALUMINIZED STEEL TUBING
(ONE END SWAGED & SLOTTED, OTHER END – O.D.)
P/N SIZE LENGTH
S3-120EXA 3" 10'
S4-120EXA 4" 10'
S5-120EXA 5" 10'
409 STAINLESS ALUMINIZED
STEEL TUBING
P/N O.D. GAUGE LENGTH
S3-120SBS4 3 " 16 10'
S35-120SBS4 3 ½" 16 10'
S4-120SBS4 4" 16 10'
S5-120SBS4 5" 16 10'
56
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COUPLERS & CONNECTORS
COUPLERS I.D.-I.D.
LENGTH
Dia.
Length
Aluminized
Part No.
Chrome
Part No.
I. D.
DIAMETER
I. D.
DIAMETER
3" 8" CP-38A —
3-1/2" 8" CP-358A CP-358C
4" 8" CP-48A CP-48C
5" 8" CP-58A CP-58C
6" 8" CP-68A CP-68C
7" 8" _ CP-78C
CONNECTORS I.D.-O.D.
Dia.
Length
Aluminized
Part No.
LENGTH
3" 6" CN-36A
3-1/2" 6" CN-356A
4" 6" CN-46A
5" 6" CN-56A
6" 6" CN-66A
I. D.
DIAMETER
O. D.
DIAMETER
LENGTH
CONNECTORS O.D.-O.D.
O.D.
Dia.
Length
Aluminized
Part No.
O. D.
DIAMETER
O. D.
DIAMETER
3" 8" S3-8SBA
3-1/2" 8" S35-8SBA
4" 8" S4-8SBA
5" 8" S5-8SBA
6" 8" S6-8SBA
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57

REDUCERS
REDUCERS O.D.-I.D.
O.D.
Diameter
I.D.
Diameter
Reducers
Length
Aluminized
Part No.
LENGTH
3" 2-1/2" 8" R3O-25IA
3-1/2" 3" 8" R35O-3IA
4" 2.5" 8" R40-25IA
4" 3" 8" R4O-3IA
4" 3-1/2" 8" R4O-35IA
5" 4" 8" R5O-4IA
6" 4" 8" R6O-4IA
6" 5" 8" R6O-5IA
7" 5" 8" —
O.D.
DIAMETER
I.D.
DIAMETER
REDUCERS I.D.-O.D.
LENGTH
I.D.
Diameter
O.D.
Diameter
Reducers
Length
Aluminized
Part No.
I.D.
DIAMETER
O.D.
DIAMETER
3" 2-1/2" 8" R3I-25OA
3.5" 3" 8" R35I-3OA
4" 3" 8" R4I-3OA
4" 3" 8" R4O-3IS*
4" 3-1/2" 8" R4I-35OA
5" 4" 8" R5I-4OA
6" 4" 8" R6I-4OA
6" 5" 8" R6I-5OA
7" 5" 8" —
*Stainless Steel
REDUCERS I.D.-I.D.
I.D.
Diameter
I.D.
Diameter
Reducers
Length
Aluminized
Part No.
LENGTH
3" 2-1/2" 8" R3I-25IA
3-1/2" 3" 8" R35I-3IA
4" 3" 8" R4I-3IA
4" 3-1/2" 8" R4I-35IA
5" 4" 8" R5I-4IA
5" 4.5" 8" R5I-45IA
6" 4" 8" R6I-4IA
6" 5" 8" R6I-5IA
7" 5" 8" —
I.D.
DIAMETER
REDUCERS O.D.-O.D.
I.D.
DIAMETER
LENGTH
O.D.
Diameter
O.D.
Diameter
Reducers
Length
Aluminized
Part No.
O.D.
DIAMETER
O.D.
DIAMETER
3" 2-1/2" 8" R3O-25OA
3-1/2" 3" 8" R35O-3OA
4" 3" 8" R4O-3OA
4" 3-1/2" 8" R4O-35OA
5" 4" 8" R5O-4OA
5" 4.5" 8" R50-450A
6" 4" 8" R6O-4OA
6" 5" 8" R6O-5OA
7" 5" 8" —
58
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STRAIGHT STACKS
4" and 5" Diameters
Dia.
Length
I.D. INLET
Aluminized
Part No.
O.D. INLET
Aluminized
Part No.
3-1/2" 18" S35-18EXA —
4" 12" S4-12EXA —
4" 18" S4-18EXA —
4" 24" S4-24EXA S4-24SBA
4" 36" S4-36EXA S4-36SBA
4" 48" S4-48EXA S4-48SBA
4" 60" S4-60EXA S4-60SBA
4" 72" S4-72EXA S4-72SBA
5" 12" S5-12EXA —
5" 18" S5-18EXA —
5" 24" S5-24EXA S5-24SBA
5" 36" S5-36EXA S5-36SBA
5" 48" S5-48EXA S5-48SBA
5" 60" S5-60EXA S5-60SBA
5" 72" S5-72EXA S5-72SBA
L
L
E
ENGTH
N
G
TH
I.D.
O.D.
REPAIR SECTIONS
Dia.
Length
Part Number
• Perfect for splicing in sections
• 16ga Aluminized Steel
4" 12" RS-412A
4" 18" RS-418A
4" 24" RS-424A
4" 36" RS-436A
4" 48" RS-448A
5" 12" RS-512A
5" 18" RS-518A
5" 24" RS-524A
5" 36" RS-536A
5" 48" RS-548A
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59

TAILPIPES
3" through 5" Diameter
Dia.
Length
I.D. INLET
Aluminized
Part No.
O.D. INLET
Aluminized
Part No.
3" 12" K3-12EXA K3-12SBA
3" 18" K3-18EXA K3-18SBA
3" 24" K3-24EXA K3-24SBA
L
E
N
G
T
H
3-1/2" 12" K35-12EXA K35-12SBA
3-1/2" 24" K35-24EXA K35-24SBA
3-1/2" 36" K35-36EXA K35-36SBA
3-1/2" 48" K35-48EXA —
4" 12" K4-12EXA K4-12SBA
4" 18" K4-18EXA K4-18SBA
4" 24" K4-24EXA K4-24SBA
4" 36" K4-36EXA K4-36SBA
4" 48" K4-48EXA K4-48SBA
4" 60" K4-60EXA K4-60SBA
4" 72" — —
4" 84" — —
4" 96" — —
I.D.
5" 12" K5-12EXA K5-12SBA
5" 18" K5-18EXA K5-18SBA
5" 24" K5-24EXA K5-24SBA
5" 36" K5-36EXA K5-36SBA
5" 48" K5-48EXA K5-48SBA
5" 53" — K5-53SBA
5" 60" K5-60EXA K5-60SBA
5" 72" — —
5" 84" — —
5" 96" — —
5" 108" — —
5" 114" — —
5" 120" — —
L
E
N
G
T
H
O.D.
60
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90° TANGENT CUT ELBOWS
A LENGT H
• Cut at tangent NO straight
• Ideal for welding & repairing
• OD/OD only
O.D.
DIAMETER
90˚
B
L
E
N
G
T
H
O.D.
DIAMETER
Dia Length Center Line Aluminized
A&B Radius Part#
3" 5" 3 1 /2" L390-0505SA
3 1 /2" 6 3 /4" 5" L3590-675675SA
4" 6 1 /2" 4 1 /2" L490-6565SA
5" 8" 5 1 /2" L590-0808SA
6" 10" 7" L690-1010SA
7" 11 1 /2" 8" L790-1212S*
8" 20" 12" L890-2020S*
* Cold rolled steel and make to order, call for leadtime
CUSTOM ELBOWS
A LENGTH
B
Measure to center line
Lead time –
Aluminized & Stainless 10-20 Days
90˚
L
E
N
G
T
H
Less than 90°
90°
Measure to backside
Quantity________________________________________
Diameter _______________________________________
Degree of Bend__________________________________
A Dimension_____________________________________
B Dimension_____________________________________
A or B Expanded (I.D.) ___________________________
Aluminized or Chrome ___________________________
Quantity_________________________________________
Diameter ________________________________________
Degree of Bend___________________________________
A Dimension______________________________________
B Dimension______________________________________
A or B Expanded (I.D.) ____________________________
Aluminized or Chrome ____________________________
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61

O.D.
O.D.
DIAMETER
DIAMETER
ELBOWS
15° Elbows
I.D. O.D.
O.D. O.D.
Dia.
Length
A&B
Center Line
Radius
Aluminized
Part No.
Aluminized
Part No.
3" 4" 3-1/2"" L315-0404A L315-0404SA
3-1/2" 4" 5" L3515-0404A L3515-0404SA
4" 4" 4-1/2" L415-0404A L415-0404SA
5" 4" 5-1/2" L515-0404A L515-0404SA
30° Elbows
I.D. O.D. O.D. O.D.
Dia.
Length
A&B
Center Line
Radius
Aluminized
Part No.
Aluminized
Part No.
3" 4" 3-1/2" L330-0404A L330-0404SA
3-1/2" 4" 5" L3530-0404A L3530-0404SA
4" 4" 4-1/2" L430-0404A L430-0404SA
5" 4" 5-1/2" L530-0404A L530-0404SA
45° Elbows
I.D. O.D.
A LENGTH
B
Dia.
Length
A&B
Center Line
Radius
Aluminized
Part No.
Aluminized
Part No.
L
ENG
T
H
2-1/2" 6" 3" L2545-0606A L2545-0606SA
3" 8" 4" L345-0808A L345-0808SA
3-1/2" 9" 5" L3545-0909A L3545-0909SA
A LENGTH
I.D.
DIAMETER
4" 6" 4-1/2" L445-0606A L445-0606SA
4" 9" 4-1/2" L445-0909A L445-0909SA
4" 12" 4-1/2" L445-1212A L445-1212SA
B
L
E
NG
T
H
5" 8" 5-1/2" L545-0808A L545-0808SA
5" 12" 5-1/2" L545-1212A L545-1212SA
6" 15" 6" L645-1515A L645-1515SA
60° Elbows
I.D.
O.D.
O.D.
DIAMETER
Dia.
Length
A&B
Center Line
Radius
Aluminized
Part No.
Aluminized
Part No.
3" 8" 3-1/2" L360-0808A L360-0808SA
3-1/2" 8" 5" L3560-0808A L3560-0808SA
4" 8" 4-1/2" L460-0808A L460-0808SA
4" 8" 4-1/2" L460-1010A L460-1010SA
4" 12" 4-1/2" L460-1212A L460-1212SA
5" 10" 5-1/2" L560-1010A L560-1010SA
62
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90° ELBOWS
Dia.
Length
A&B
Center Line
Radius
I.D. O.D.
Aluminized
Part No.
O.D.
DIAMETER
B LENGTH
90˚
I.D.
DIAMETER
A
L
E
N
G
T
H
2-1/2" 12" 4-1/2" L2590-1212A
3" 7" 4" L390-0707A
3" 8" 4" L390-0808A
3" 10" 4" L390-1010A
3" 14" 4" L390-1414A
3-1/2" 8" 5" L3590-0808A
3-1/2" 12" 5" L3590-1212A
3-1/2" 16" 5" L3590-1616A
4" 8" 4-1/2" L490-0808A
4" 10" 4-1/2" L490-1010A
4" 12" 4-1/2" L490-1212A
4" 15" 4-1/2" L490-1515A
4" 18" 4-1/2" L490-1818A
4" 18 x 29" 4-1/2" L490-1829A
5" 10" 5-1/2" L590-1010A
5" 12" 5-1/2" L590-1212A
5" 15" 5-1/2" L590-1515A
5" 18" 5-1/2" L590-1818A
5" 18 x 32" 5-1/2" L590-1832A
5" 13.5" 8 L590-1313A-8
5" 17.5" 8 L590-1818A-8
6" 13" 7" L690-1313A
6" 24" 7" L690-2424A
O.D.
DIAMETER
NOTE: Leg lengths are
measured to the backside,
not center line
A B LENGTH
90˚
O.D.
DIAMETER
AB
L
E
N
G
TH
Dia.
Length
A&B
Center Line
Radius
O.D.
Aluminized
Part No.
2-1/2" 12" 12" L2590-1212SA
3" 6" 4" L390-0606SA
3" 7" 4" L390-0707SA
3" 10" 4" L390-1010SA
3" 14" 4" L390-1414SA
3-1/2" 8" 5" L3590-0808SA
3-1/2" 12" 5" L3590-1212SA
3-1/2" 16" 5" L3590-1616SA
4" 6" 4-1/2" L490-0606SA
4" 8" 4-1/2" L490-0808SA
4" 10" 4-1/2" L490-1010SA
4" 12" 4-1/2" L490-1212SA
4" 15" 4-1/2" L490-1515SA
4" 18" 4-1/2" L490-1818SA
4" 18 x 29" 4-1/2" L490-1829SA
5" 8" 5-1/2" L590-0808SA
5" 10" 5-1/2" L590-1010SA
5" 12" 5-1/2" L590-1212SA
5" 15" 5-1/2" L590-1515SA
5" 18" 5-1/2" L590-1818SA
5" 18 x 32" 5-1/2" L590-1832SA
5" 13.5" 8 L590-1313SA-8
5" 17.5" 8 L590-1818SA-8
6" 13" 7" L690-1313SA
6" 24" 7" —
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63

QP MUFFLERS
3"- 5" ID
Sizes Available
7.8% Fuel Mileage Increase (avg.)
Replaces Stock Mufflers
Quiet as a Stock Muffler*
Meets Federal and California Sound Levels
Heavy Gauge, 100% welded construction
No Turbo Lag, Faster Acceleration
Works On All Engines
Easily Installed, Bolts in place
Patented 2004
30 Day Money Back Guarantee
3"- 5" ID
Sizes Available
Use less fuel and improve
your company’s bottom line.
* Driving and Acceleration only, NOT engine braking.
PART NO.
QPM-1051
QPM-851
QPM-851-34
QPM-851-354
QPM-851-44
QPM-8H
DESCRIPTION
10" X 51" OAL / 44" BODY / 5" I.D. IN AND OUT
8" X 51" OAL / 44" BODY / 5" I.D. IN AND OUT
8" X 51" OAL / 44" BODY / 3" I.D. IN AND 4" I.D. OUT
8" X 51" OAL / 44" BODY / 3.5" I.D. IN AND 4" I.D. OUT
8" X 51" OAL / 44" BODY / 4" I.D. IN AND OUT
HD MUFFLER HANGER 8" DIAMETER
QPM-8H
64
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QP MUFFLERS
NEW
Introducing the NEW
PATENT PENDING
HF-1051 (High Flow)
Stock Replacement Muffler
• 3% minimum gain in MPG Guaranteed.
• 30 Day Money Back Guarantee
• Easily Installed, Bolts in Place
• Heavy Gauge, 100% Welded Construction
• No Turbo Lag, Faster Acceleration
• Replaces Stock 10" Diameter Mufflers, Affordable
• HIGHEST CFM Flow of ANY Mufflers
• Quiet as a Stock 10" Diameter Muffler*
• Meets Federal and California Sound Levels
• Works on All Engines, ISX, 3406E, 14L Series 60, Etc.
*Driving and Acceleration only, NOT engine braking.
Use less fuel and improve your
company's bottom line.
PART NO.
HF-1051
DESCRIPTION
10" X 51" OAL / 44" BODY / 5" I.D. IN AND OUT
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65

CATALYTIC CONVERTER MUFFLERS
Certified to Meet EPA Requirements
Grand Rock converter mufflers are engineered to enable midrange
engines to meet emission requirements of the EPA's
Diesel Emissions Standards. The catalytic core within the
muffler reduces gaseous hydrocarbons, carbon monoxide,
and particulates, while at the same time reducing exhaust
noise to 67-72 dBA at 50 feet per the EPA drive-by noise test
(levels will vary depending on system configuration).
Same package size as
equivalent mufflers
Only 10 to 15 pounds heavier
than equivalent mufflers
409 Stainless steel
Internal design for even
exhaust flow distribution
66
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CUSTOM MUFFLERS
We can either modify existing mufflers or build them from scratch.
We need to know the following:
Quantity____________________________
Type (see samples) _ _________________
Engine Type & Size___________________
A Inlet Diameter I.D. or O.D. __________
B Outlet Diameter I.D. or O.D._________
C Body Diameter____________________
Body Diameter
Available
6"
7"
8.5"
9"
10"
D Body Length______________________
11"
E Overall Length_____________________
F Location of Inlet/Clock Position _____
G Location of Outlet/Clock Position ___
G Measurement_____________________
12
16
8" x 11"
10" x 15"
Type 1
Type 4A
12
9 1
3
Type 2
Type 3
6
NOTE: All
clock positions
viewed from
inlet end
of muffler.
12
Type 4
9
1
3
6
Type 6
Type 7
All Custom Muffler Sales are Final with no returns.
The manufacturing and shipping process is generally 10-14 days.
A picture is worth a thousand words. Please fax us your specs.
1-800-321-3674
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67

MUFFLERS CHART
PART # DESCRIPTION TYPE INLET ID OUTLET ID
M-034 H.D. MUFFLER; STYLE
"4", BLUEBIRD,GMC
M-070 H.D. MUFFLER; STYLE
"2", FREIGHTLINER
M-079 H.D. MUFFLER; STYLE
"1", BLUEBIRD
M-087 H.D. MUFFLER; STYLE
"1", FREIGHTLINER
M-106 H.D. MUFFLER; STYLE
"2", INTERNATIONAL
M-110 H.D. MUFFLER; STYLE
"1", THOMAS
M-115 H.D. MUFFLER; STYLE
"3", BLUEBIRD,THOMAS
M-124 H.D. MUFFLER; STYLE
"3", BLUEBIRD
M-125 H.D. MUFFLER, 4" ;
STYLE "2", THOMAS
M-127 H.D. MUFFLER, 4"; STYLE
"1",THOMAS
M-131 H.D. MUFFLER, 4"; STYLE
"1",BLUEBIRD
M-147 H.D. MUFFLER, 5" ;
STYLE "2", THOMAS
M-152 H.D. MUFFLER; STYLE
"3", BLUEBIRD
M-153 H.D. MUFFLER; STYLE
"2", INTERNATIONAL,
GMC, THOMAS
M-185 H.D. MUFFLER; STYLE
"2A"INTERNATIONAL
M-465 H.D. MUFFLER; STYLE
"1", BLUEBIRD
M-502 H.D. MUFFLER; STYLE
"2", FORD, FREIGHTLINER
M-514 H.D. MUFFLER; STYLE
"1", BLUEBIRD
M-529 H.D. MUFFLER; STYLE
"2", FORD
M-536 H.D. MUFFLER; STYLE "2"
INTERNATIONAL
M-622 H.D. MUFFLER; STYLE
"8", BLUEBIRD, GMC
M-624 H.D. MUFFLER; STYLE
"2", CHEVROLET/GMC
M-625 H.D. MUFFLER; STYLE
"4", BLUEBIRD
M-626 H.D. MUFFLER; STYLE
"4", THOMAS
M-672 H.D. MUFFLER; STYLE
"6",THOMAS
M-722 H.D. MUFFLER; STYLE
"2A", BLUEBIRD,GMC,
SPHERICAL FLARE
M-755 H.D. MUF-
FLER; STYLE "5",
FORD,INTERNATIONAL
M-878 H.D. MUFFLER; STYLE
"1", FREIGHTLINER
M-879 H.D. MUFFLER; STYLE
"2", FREIGHTLINER
BODY
DIAMETER
BODY
LENGTH
OVERALL
LENGTH
INLET
OFFSET
OUTLET
OFFSET
INLET
POSITION
OUTLET
POSITION
4 4" 4" 11" 36" 40" 4.5" 2.5" 3 12
2 3" 4" 11" 36.25" 42" 3" 4" 6 12
1 4" 4" 10" 36" 43"
1 4" 4" 11" 36" 43"
2 3.5" 3.5"
8.25" X
11.5"
1 3.5" 4" 8.5" 29.5" 36"
26" 32" 3" 3" 12 6
3 4" 4" 10" X 15" 26" 2 29.2" 4" 4" 12 6
3 4" 5" 12" X 15" 30" 3 34" 4" 4" 12 6
2 4" 4" 10" X 15" 34" 40.5" 4.25" 4.25" 6 12
1 4" 4" 8.5" 34.5" 40"
1 4" 4" 9" 44.5" 51"
2 5" 5" 10" X 15" 27" 33" 3.3" 3.3" 12 6
3 3" 4" 10" X 15" 30" 3 34" 4" 4" 12 6
2 4" 4"
2A
2.75"-
2.75"
4"
8.25" X
11.5"
8.25" X
11.5"
1 5" 5" 10.1" 44.5" 51"
27" 33" 2.5" 2.5" 12 6
27" 32.75" 4"-4" 2.5" 12-6 6
2 4" 4" 11" 36" 41.2" 2.5" 2.5" 12 6
1 4" 5" 9" 44.5" 51"
2 4" 4" 11" 36" 42.2" 2.5" 2.5" 12 6
2 3.5" 4"
8.25" X
11.5"
32" 36.5" 2.5" 2.5" 12 6
8 2.5" FLANGE 8.5" 29.5" 37.5" 2.5" 2.5" 12 3-3
2 2.75" 3" 8.5" 30.25" 36.25" 3" 2.75" 12 6
4 4" 4" 11" 42" 45" 4" 0 12 0
4 4" 4" 11" 33.5" 36.5" 4" 0 12 0
6 5" 5" 10" X 15" 36" 38.8" 4" 28.5" 12 6
2A
2.5"-
2.5"
FLARE
5 3.5" 4" OD
3 "OD 8.7" 30" 39" 1.75" 2" 1:30-10:30 6
8.25" X
11.5"
1 3" 4" 11" 36" 41.75"
32" 38.4" 2.5" 2.5" 12
6(90*
ELBOW)
2 3.5" 4" 11" 36" 42" 3" 0 0 12
68
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SCHOOL BUSES
School Bus Heater and Defroster Motors
F
F
E
E
D
D
A
A
C
C
B
B
D B A C E F
Part# Rotation Volts Shaft Body Body Length Shaft Length Front Stud Rear Stud
Dia. Dia without Bearing with Bearing Length Length
No. of No. of Vented
Speeds Wires Housing
DEFROSTER
GR-055 CCW 12 1/4" 3.0 2.50 1.50 0.50 0.15 2 2 N
HEATER
GR-315 CCW 12 5-16" 3.0 3.00 1.66 0.44 0.15 2 3 Y
GR-798 REV 12 5-16" 3.0 3.40 1.75 0.33 — 1 2 Y
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69

TOOLS
PIPE HOOKS
Part No. PH-4A – (2¾" to 4" Dia.)
H.D. pipe hooks.
Part No. PH-6A – (5" to 6" Dia.)
H.D. pipe hooks.
PIPE CUTTERS
Part No. Pipecut5 – (2½" to 5" Dia.)
Part No. Pipecut65 – (4" to 6 ⁄ " Dia.)
Standard tube cutter & wheel style.
Part No. Cutwheel – (Wheel)
Replacement components for tube style cutters.
PIPE END SHAPER TOOL
Part No. Shaper4 – (2¾" to 4½" Dia.)
70
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TOOLS
MUFFLER CEMENT
Part No. Cement – 16oz.
This high-performance muffler cement applies like putty
but dries metal hard. Available in cases of 12 only.
PIPE EXPANDERS
Part No. Expander35
Part No. Expander4
Part No. Expander5
– (3½" Dia.)
– (4" Dia.)
– (5" Dia.)
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71

CUSTOM TUBE FABRICATION
Tube
Diameter
Bend
Radius
3 3.5
3.5 5
4 4.5
5 5.5
5 7.5
6 7.0
6 10.0
7 8.0
End Forming & Fabrication
Deburring
Sizing
Reducing
Tapping
Chamfering
Expanding
Beading
Machining
Flaring
Slotting
Welding
Swaging
Drilling
72
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