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  6. Walker 18398

Walker 18398 Exhaust Muffler

Walker 18398 Exhaust Muffler
Walker 18398 Exhaust Muffler Image 1
Walker 18398 Exhaust Muffler

Walker
Brand:Walker
Part Number: 18398
UPC: 086387183987
Weight: 12.25 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

SOUND FX MUFFLER

Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit 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
  • EASY TO INSTALL -- Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn't require specialized fabrication and/or welding
  • FACTORY SOUND -- Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • 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:
21 in.
Body Material:
Steel
Body Width:
9.75 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:
2.875
Inlet Quantity:
1
Inlet Type:
Pipe Connection
Muffler Type:
Combination
Outlet 1 Inside Diameter:
3.175 in.
Outlet 1 Type:
Pipe Connection
Outlet Configuration:
Center
Outlet Inside Diameter:
3.175 in.
Outlet Quantity:
1
Outlet Type:
Pipe Connection
Overall Length:
27 in.
Reversible:
No
Shape:
Oval
Tunable:
No
Universal Or Specific Fit:
Specific
Country of Origin:
US

Select a vehicle to narrow Walker 18398 Exhaust Muffler fitment info!

Last Updated: 06/23/2021

Years Vehicle Per Vehicle Fit NotesFitment Notes

1988

 

1987

 

1988

 

1987

 
Chevrolet P20

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.
 

Chevrolet P20



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Chevrolet P30

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.
 

Chevrolet P30



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Chevrolet P30

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 157.0 In.
 

Chevrolet P30



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 157.0 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Chevrolet P30

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 178.0 In.
 

Chevrolet P30



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 178.0 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Chevrolet R20

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
 

Chevrolet R20



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.

1 Per Vehicle

1989

 

1989

 
Chevrolet R2500

7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
 

Chevrolet R2500



7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.

1 Per Vehicle

1988

 

1988

 
Chevrolet R30

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.
 

Chevrolet R30



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Chevrolet R30

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
RWD
 

Chevrolet R30



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
RWD

1 Per Vehicle

1989

 

1989

 
Chevrolet R3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.
 

Chevrolet R3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.

1 Per Vehicle

1989

 

1989

 
Chevrolet R3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
RWD
 

Chevrolet R3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
RWD

1 Per Vehicle

1988

 

1988

 
Chevrolet V30

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.
 

Chevrolet V30



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Chevrolet V30

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
4WD
 

Chevrolet V30



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
4WD

1 Per Vehicle

1989

 

1989

 
Chevrolet V3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.
 

Chevrolet V3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.

1 Per Vehicle

1989

 

1989

 
Chevrolet V3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
4WD
 

Chevrolet V3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
4WD

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
GMC P2500

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.
 

GMC P2500



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
GMC P3500

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.
 

GMC P3500



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 133.0 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
GMC P3500

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 157.0 In.
 

GMC P3500



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 157.0 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
GMC P3500

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 178.0 In.
 

GMC P3500



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 178.0 In.

1 Per Vehicle

1989

 

1988

 

1987

 

1989

 

1988

 

1987

 
GMC R2500

7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
 

GMC R2500



7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.

1 Per Vehicle

1988

 

1987

 

1988

 

1987

 
GMC R2500

5.7L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
 

GMC R2500



5.7L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.

1 Per Vehicle

1989

 

1988

 

1989

 

1988

 
GMC R3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.
 

GMC R3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.

1 Per Vehicle

1989

 

1988

 

1987

 

1989

 

1988

 

1987

 
GMC R3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
RWD
 

GMC R3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
RWD

1 Per Vehicle

1989

 

1988

 

1989

 

1988

 
GMC V3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.
 

GMC V3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
without California Emission System
Wheel Base 135.5 In.

1 Per Vehicle

1989

 

1988

 

1987

 

1989

 

1988

 

1987

 
GMC V3500

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
1
 
Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
4WD
 

GMC V3500



5.7L V8 Gas OHV,
7.4L V8 Gas OHV Walker SoundFX Direct Fit Muffler
with Dual Catalytic Converters
Wheel Base 164.5 In.
4WD

1 Per Vehicle