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  2. Auto Parts
  3. Exhaust
  4. Mufflers
  5. Exhaust Muffler
  6. Walker 18120

Walker 18120 Exhaust Muffler

Walker 18120 Exhaust Muffler
Walker 18120 Exhaust Muffler Image 1
Walker 18120 Exhaust Muffler

Walker
Brand:Walker
Part Number: 18120
UPC: 086387181204
Weight: 15 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

UNIVERSAL TRU-FIT MUFFLER

Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.

Features and Benefits:

  • BUILT TO LAST -- Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • FACTORY SOUND -- Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • GET MORE MILES FROM YOUR MUFFLER -- Designed and tested to extend muffler life
  • RESISTS CORROSION -- Aluminized steel construction and internal drainage system helps reduce corrosion

Specifications:

Body Height:
4.25 in.
Body Length:
18 in.
Body Material:
Steel
Body Width:
8.813 in.
Finish:
Aluminized
Grade Type:
Regular
Inlet 1 Inside Diameter:
2.5 in.
Inlet 1 Type:
Pipe Connection
Inlet Configuration:
Offset
Inlet Inside Diameter:
2.5 in.
Inlet Offset:
2.625
Inlet Quantity:
1
Inlet Type:
Pipe Connection
Muffler Type:
Combination
Outlet 1 Outside Diameter:
2 in.
Outlet 1 Type:
Pipe Connection
Outlet Configuration:
Offset
Outlet Outside Diameter:
2 in.
Outlet Quantity:
1
Outlet Type:
Pipe Connection
Overall Length:
26 in.
Reversible:
No
Shape:
Oval
Tunable:
No
Universal Or Specific Fit:
Universal
Country of Origin:
US

Select a vehicle to narrow Walker 18120 Exhaust Muffler fitment info!

Last Updated: 12/24/2023

Years Vehicle Per Vehicle Position Fit NotesFitment Notes
Showing 100 fitments from page 3 of 4

1981

 

1980

 

1979

 

1981

 

1980

 

1979

 
Chevrolet P20

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
without Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Manual Transmission
 

Chevrolet P20



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
without Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Manual Transmission

1 Per Vehicle

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 
Chevrolet P20

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P20



4.8L L6 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1979

 

1979

 
Chevrolet P20

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P20



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1978

 

1978

 
Chevrolet P20

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P20



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
Chevrolet P20

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
without Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P20



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
without Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1974

 
Chevrolet P20 Van

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
8th VIN Digit: Y
 

Chevrolet P20 Van



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
8th VIN Digit: Y

1 Per Vehicle

1973

 

1973

 
Chevrolet P20 Van

5.0L V8 Gas,
5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P20 Van



5.0L V8 Gas,
5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1981

 

1981

 
Chevrolet P30

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 158.5 In.
Automatic Transmission
 

Chevrolet P30



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 158.5 In.
Automatic Transmission

1 Per Vehicle

1981

 

1980

 

1979

 

1981

 

1980

 

1979

 
Chevrolet P30

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 137.0 In.
Automatic Transmission
 

Chevrolet P30



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 137.0 In.
Automatic Transmission

1 Per Vehicle

1981

 

1980

 

1979

 

1981

 

1980

 

1979

 
Chevrolet P30

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 178.0 In.
Automatic Transmission
 

Chevrolet P30



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 178.0 In.
Automatic Transmission

1 Per Vehicle

1981

 

1980

 

1979

 

1978

 

1977

 

1981

 

1980

 

1979

 

1978

 

1977

 
Chevrolet P30

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Forward Control
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 133.0 In.
 

Chevrolet P30



4.8L L6 Gas OHV SoundFX Universal
Forward Control
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 133.0 In.

1 Per Vehicle

1981

 

1980

 

1979

 

1978

 

1977

 

1981

 

1980

 

1979

 

1978

 

1977

 
Chevrolet P30

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Forward Control
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 157.0 In.
 

Chevrolet P30



4.8L L6 Gas OHV SoundFX Universal
Forward Control
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 157.0 In.

1 Per Vehicle

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 

1981

 

1980

 

1979

 

1978

 

1977

 

1976

 

1975

 
Chevrolet P30

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Except Motorhome Chassis
Forward Control
Regular Duty Muffler
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
Manual Transmission
 

Chevrolet P30



5.7L V8 Gas OHV SoundFX Universal
Except Motorhome Chassis
Forward Control
Regular Duty Muffler
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
Manual Transmission

1 Per Vehicle

1980

 

1979

 

1980

 

1979

 
Chevrolet P30

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 157.0 In.
Automatic Transmission
 

Chevrolet P30



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 157.0 In.
Automatic Transmission

1 Per Vehicle

1975

 

1975

 
Chevrolet P30

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P30



4.8L L6 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
Chevrolet P30 Van

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P30 Van



5.7L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1973

 
Chevrolet P30 Van

5.0L V8 Gas
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

Chevrolet P30 Van



5.0L V8 Gas SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1978

 

1978

 
GMC C15

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C15



4.8L L6 Gas OHV SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

1 Per Vehicle

1978

 

1978

 
GMC C15

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C15



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1978

 

1977

 

1978

 

1977

 
GMC C15

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C15



4.1L L6 Gas OHV SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
GMC C15

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.
 

GMC C15



4.8L L6 Gas OHV SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.

1 Per Vehicle

1978

 

1977

 

1976

 

1978

 

1977

 

1976

 
GMC C15

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C15



4.1L L6 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

1 Per Vehicle

1978

 

1977

 

1976

 

1978

 

1977

 

1976

 
GMC C15

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C15



7.4L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1977

 

1977

 
GMC C15

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.
 

GMC C15



4.1L L6 Gas OHV SoundFX Universal
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.

1 Per Vehicle

1977

 

1977

 
GMC C15

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.
 

GMC C15



4.8L L6 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.

1 Per Vehicle

1977

 

1976

 

1977

 

1976

 
GMC C15

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.
 

GMC C15



4.1L L6 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.

1 Per Vehicle

1976

 

1976

 
GMC C15

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C15



4.8L L6 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

1 Per Vehicle

1975

 

1975

 
GMC C15

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Early Models with 2 (in) Tail Pipe
 

GMC C15



4.1L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Early Models with 2 (in) Tail Pipe

1 Per Vehicle

1975

 

1975

 
GMC C15

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15



4.8L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1975

 

1975

 
GMC C15

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Except Heavy Duty Chassis
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C15



7.4L V8 Gas OHV SoundFX Universal
Except Heavy Duty Chassis
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1975

 

1975

 
GMC C15

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15



7.4L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

2 Per Vehicle

1978

 

1978

 
GMC C15 Suburban

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C15 Suburban



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

2 Per Vehicle

1978

 

1977

 

1976

 

1978

 

1977

 

1976

 
GMC C15 Suburban

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C15 Suburban



4.1L L6 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C15 Suburban

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C15 Suburban



7.4L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

2 Per Vehicle

1975

 

1975

 
GMC C15 Suburban

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Early Models with 2 (in) Tail Pipe
Wheel Base 129.5 In.
 

GMC C15 Suburban



4.1L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Early Models with 2 (in) Tail Pipe
Wheel Base 129.5 In.

1 Per Vehicle

1974

 

1974

 
GMC C15/C1500 Pickup

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Pickup



5.7L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC C15/C1500 Pickup

5.7L V8 LPG OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Pickup



5.7L V8 LPG OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1973

 
GMC C15/C1500 Pickup

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Pickup



5.0L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1972

 

1971

 

1972

 

1971

 
GMC C15/C1500 Pickup

6.6L V8 Gas OHV
2
 		 
SoundFX Universal
with Leaf Springs
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Pickup



6.6L V8 Gas OHV SoundFX Universal
with Leaf Springs
Modifications and/or Additional Parts May Be Required for Installation

2 Per Vehicle

1970

 

1970

 
GMC C15/C1500 Pickup

6.6L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Pickup



6.6L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

2 Per Vehicle

1969

 

1969

 
GMC C15/C1500 Pickup

6.5L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Pickup



6.5L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

2 Per Vehicle

1968

 

1968

 
GMC C15/C1500 Pickup

6.5L V8 Gas OHV
1
 
Left (Driver)
 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Pickup



6.5L V8 Gas OHV

Left (Driver) SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC C15/C1500 Suburban

5.7L V8 Gas OHV,
5.7L V8 LPG OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Suburban



5.7L V8 Gas OHV,
5.7L V8 LPG OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1973

 
GMC C15/C1500 Suburban

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C15/C1500 Suburban



5.0L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1979

 

1979

 
GMC C1500

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.
 

GMC C1500



4.1L L6 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 117.5 In.

1 Per Vehicle

1979

 

1979

 
GMC C1500

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C1500



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1979

 

1979

 
GMC C1500 Suburban

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C1500 Suburban



4.1L L6 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

1 Per Vehicle

1979

 

1979

 
GMC C1500 Suburban

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C1500 Suburban



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

2 Per Vehicle

1978

 

1978

 
GMC C25

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25



4.1L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1978

 

1978

 
GMC C25

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C25



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1978

 

1978

 
GMC C25

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.
 

GMC C25



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.

2 Per Vehicle

1978

 

1977

 

1978

 

1977

 
GMC C25

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C25



4.8L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C25

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.
 

GMC C25



4.8L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C25

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C25



7.4L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C25

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.
 

GMC C25



7.4L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.

2 Per Vehicle

1978

 

1978

 
GMC C25 Suburban

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C25 Suburban



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

2 Per Vehicle

1978

 

1977

 

1978

 

1977

 
GMC C25 Suburban

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C25 Suburban



4.8L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C25 Suburban

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C25 Suburban



7.4L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

2 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC C25/C2500 Pickup

5.7L V8 Gas OHV,
5.7L V8 LPG OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Pickup



5.7L V8 Gas OHV,
5.7L V8 LPG OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1972

 

1972

 
GMC C25/C2500 Pickup

6.6L V8 Gas OHV
1
 
Left (Driver)
 
SoundFX Universal
with Leaf Springs
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Pickup



6.6L V8 Gas OHV

Left (Driver) SoundFX Universal
with Leaf Springs
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1972

 

1972

 
GMC C25/C2500 Pickup

6.6L V8 Gas OHV
1
 
Right (Passenger)
 
SoundFX Universal
with Leaf Springs
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Pickup



6.6L V8 Gas OHV

Right (Passenger) SoundFX Universal
with Leaf Springs
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1972

 

1971

 

1972

 

1971

 
GMC C25/C2500 Pickup

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
with Leaf Springs
with 127 (in) Wheelbase
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Pickup



5.0L V8 Gas OHV SoundFX Universal
with Leaf Springs
with 127 (in) Wheelbase
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1972

 

1971

 

1970

 

1969

 

1972

 

1971

 

1970

 

1969

 
GMC C25/C2500 Pickup

5.7L V8 Gas OHV,
5.7L V8 LPG OHV
1
 		 
SoundFX Universal
with Leaf Springs
with 127 (in) Wheelbase
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Pickup



5.7L V8 Gas OHV,
5.7L V8 LPG OHV SoundFX Universal
with Leaf Springs
with 127 (in) Wheelbase
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1969

 

1969

 
GMC C25/C2500 Pickup

6.5L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Pickup



6.5L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

2 Per Vehicle

1968

 

1968

 
GMC C25/C2500 Pickup

6.5L V8 Gas OHV
1
 
Left (Driver)
 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Pickup



6.5L V8 Gas OHV

Left (Driver) SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC C25/C2500 Suburban

5.7L V8 Gas OHV,
5.7L V8 LPG OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Suburban



5.7L V8 Gas OHV,
5.7L V8 LPG OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1973

 
GMC C25/C2500 Suburban

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C25/C2500 Suburban



5.0L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1985

 

1985

 
GMC C2500

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.
 

GMC C2500



7.4L V8 Gas OHV SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.

2 Per Vehicle

1984

 

1983

 

1982

 

1981

 

1980

 

1984

 

1983

 

1982

 

1981

 

1980

 
GMC C2500

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.
 

GMC C2500



7.4L V8 Gas OHV SoundFX Universal
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.

2 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
GMC C2500

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C2500



7.4L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1979

 

1979

 
GMC C2500

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C2500



4.1L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1979

 

1979

 
GMC C2500

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.
 

GMC C2500



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 131.5 In.

2 Per Vehicle

1979

 

1979

 
GMC C2500

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.
 

GMC C2500



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 164.5 In.

2 Per Vehicle

1982

 

1981

 

1980

 

1982

 

1981

 

1980

 
GMC C2500 Suburban

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
4 Doors
Wheel Base 129.5 In.
 

GMC C2500 Suburban



7.4L V8 Gas OHV SoundFX Universal
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
4 Doors
Wheel Base 129.5 In.

2 Per Vehicle

1979

 

1979

 
GMC C2500 Suburban

7.4L V8 Gas OHV
2
 		 
SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.
 

GMC C2500 Suburban



7.4L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
Wheel Base 129.5 In.

2 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C35

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C35



4.8L L6 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C35

7.4L V8 Gas OHV
1
 
Left (Driver)
 
SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C35



7.4L V8 Gas OHV

Left (Driver) SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1978

 

1977

 

1976

 

1975

 

1978

 

1977

 

1976

 

1975

 
GMC C35

7.4L V8 Gas OHV
1
 
Right (Passenger)
 
SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C35



7.4L V8 Gas OHV

Right (Passenger) SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1974

 

1973

 
GMC C35/C3500 Pickup

5.7L V8 Gas OHV,
5.7L V8 LPG OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C35/C3500 Pickup



5.7L V8 Gas OHV,
5.7L V8 LPG OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1973

 
GMC C35/C3500 Pickup

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C35/C3500 Pickup



5.0L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1970

 

1970

 
GMC C35/C3500 Pickup

6.6L V8 Gas OHV
2
 		 
SoundFX Universal
Regular Duty Muffler
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C35/C3500 Pickup



6.6L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation

2 Per Vehicle

1969

 

1969

 
GMC C35/C3500 Pickup

6.5L V8 Gas OHV
2
 		 
SoundFX Universal
Regular Duty Muffler
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C35/C3500 Pickup



6.5L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Left Hand and Right Hand
Modifications and/or Additional Parts May Be Required for Installation

2 Per Vehicle

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 
GMC C3500

7.4L V8 Gas OHV
1
 
Left (Driver)
 
SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C3500



7.4L V8 Gas OHV

Left (Driver) SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 

1985

 

1984

 

1983

 

1982

 

1981

 

1980

 

1979

 
GMC C3500

7.4L V8 Gas OHV
1
 
Right (Passenger)
 
SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C3500



7.4L V8 Gas OHV

Right (Passenger) SoundFX Universal
Before 01/01/1985
Do Not Use with Federal or H5D Emissions System
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1979

 

1979

 
GMC C3500

4.8L L6 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC C3500



4.8L L6 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
GMC G15/G1500 Van

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC G15/G1500 Van



5.7L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1972

 

1973

 

1972

 
GMC G15/G1500 Van

5.0L V8 Gas
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC G15/G1500 Van



5.0L V8 Gas SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
GMC G25/G2500 Van

5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC G25/G2500 Van



5.7L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1972

 

1973

 

1972

 
GMC G25/G2500 Van

5.0L V8 Gas
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC G25/G2500 Van



5.0L V8 Gas SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1974

 

1973

 

1972

 

1971

 

1974

 

1973

 

1972

 

1971

 
GMC G35/G3500 Van

5.7L V8 Gas OHV,
5.7L V8 LPG OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC G35/G3500 Van



5.7L V8 Gas OHV,
5.7L V8 LPG OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1973

 

1973

 
GMC G35/G3500 Van

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation
 

GMC G35/G3500 Van



5.0L V8 Gas OHV SoundFX Universal
Regular Duty Muffler
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1979

 

1979

 
GMC Jimmy

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
 

GMC Jimmy



4.1L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation

1 Per Vehicle

1979

 

1978

 

1979

 

1978

 
GMC Jimmy

5.0L V8 Gas OHV,
5.7L V8 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
RWD
 

GMC Jimmy



5.0L V8 Gas OHV,
5.7L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
RWD

1 Per Vehicle

1979

 

1978

 

1979

 

1978

 
GMC Jimmy

5.7L V8 Gas OHV,
6.6L V8 Gas OHV
1
 		 
SoundFX Universal
with Single Catalytic Converter
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
4WD
 

GMC Jimmy



5.7L V8 Gas OHV,
6.6L V8 Gas OHV SoundFX Universal
with Single Catalytic Converter
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
4WD

1 Per Vehicle

1978

 

1978

 
GMC Jimmy

4.1L L6 Gas OHV,
5.7L V8 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
RWD
 

GMC Jimmy



4.1L L6 Gas OHV,
5.7L V8 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
RWD

1 Per Vehicle

1978

 

1978

 
GMC Jimmy

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
with Canada Emissions System
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
RWD
 

GMC Jimmy



5.0L V8 Gas OHV SoundFX Universal
with Canada Emissions System
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
RWD

1 Per Vehicle

1978

 

1978

 
GMC Jimmy

6.6L V8 Gas OHV
1
 
Right (Passenger)
 
SoundFX Universal
with Dual Exhaust
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
4WD
 

GMC Jimmy



6.6L V8 Gas OHV

Right (Passenger) SoundFX Universal
with Dual Exhaust
without California Emissions System
Modifications and/or Additional Parts May Be Required for Installation
4WD

1 Per Vehicle

1978

 

1977

 

1978

 

1977

 
GMC Jimmy

5.0L V8 Gas OHV
1
 		 
SoundFX Universal
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
4WD
 

GMC Jimmy



5.0L V8 Gas OHV SoundFX Universal
with Single Exhaust
Modifications and/or Additional Parts May Be Required for Installation
4WD

1 Per Vehicle

1978

 

1977

 

1976

 

1978

 

1977

 

1976

 
GMC Jimmy

4.1L L6 Gas OHV
1
 		 
SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
4WD
 

GMC Jimmy



4.1L L6 Gas OHV SoundFX Universal
Modifications and/or Additional Parts May Be Required for Installation
4WD

1 Per Vehicle
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