Walker 18375 Exhaust Muffler

Brand	Walker 18375
Universal Or Specific Fit	Specific
Shape	Oval
Grade Type	Regular
Inlet Inside Diameter	2.5
Body Width	9.75
Inlet Quantity	1
Outlet Inside Diameter	2.25
Reversible	No
Tunable	No
Overall Length	24
Body Height	4.25
Body Length	19
Body Material	Steel
Finish	Aluminized
Inlet 1 Inside Diameter	2.5
Inlet 1 Type	Pipe connection
Inlet Configuration	Offset
Inlet Offset	2.875
Inlet Type	Pipe connection
Muffler Type	Combination
Outlet 1 Inside Diameter	2.25
Outlet 1 Type	Pipe connection
Outlet 2 Inside Diameter	2.25
Outlet 2 Type	Pipe connection
Outlet Configuration	Offset
Outlet Quantity	2
Outlet Type	Pipe connection
Product line	SoundFX Direct Fit
Fits	Chevrolet and Pontiac · 47 vehicles

Direct-fit design. Specific-fit muffler installs cleanly with no guesswork.

Aluminized steel. Helps resist corrosion for longer service life.

Mechanical interior joints. Spun-locked heads add durability and a quality finish.

Cross-references AMS Automotive 6584, AP Exhaust 700219 and TYC 700359 for the same application. See all 3.

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Walker SoundFX Direct Fit Muffler

Walker SoundFX Direct Fit muffler Part Number 18375 is a specific-fit exhaust muffler for select Chevrolet Camaro and Pontiac Firebird applications. It combines an oval steel body with aluminized construction to support longer service life than low-carbon steel, while maintaining a clean OE-style appearance and controlled exhaust acoustics.

Key Features

Specific-fit exhaust muffler for direct replacement applications
Oval body shape with aluminized steel finish
Steel body construction for durability
Offset inlet configuration with 2.5-inch inlet inside diameter
Dual 2.25-inch outlet pipe connections with offset outlet configuration
Mechanical interior joints and spun-locked heads for added structural integrity
Walker SoundFX Direct Fit line for OE-style fit and sound control

Product Details

Walker SoundFX Direct Fit Part Number 18375 is built for exhaust service on 1984-1997 Chevrolet Camaro and 1984-1997 Pontiac Firebird applications listed below. The muffler uses a 24-inch overall length, 19-inch body length, 9.75-inch body width, and 4.25-inch body height, with a combination muffler design and pipe connection inlet and outlet ends. This configuration supports direct replacement on select Camaro and Firebird exhaust systems where the original layout uses an offset inlet and dual offset outlets.

This part cross-references AP Exhaust 700219 for the same application.

Vehicle Fitment

Fits 1993-1997 Pontiac Firebird, N/A — If welded assembly, modifications and/or additional parts may be required; SoundFX Direct Fit
Fits 1993-1997 Pontiac Firebird, N/A — If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1987-1989 Pontiac Firebird, N/A — If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1993-1995 Chevrolet Camaro, N/A — If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1989-1992 Chevrolet Camaro, N/A — with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1989-1992 Pontiac Firebird, N/A — with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1986-1990 Chevrolet Camaro, N/A — with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1984-1990 Pontiac Firebird, N/A — with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1987-1989 Chevrolet Camaro, N/A — with Single Catalytic Converter; If welded assembly, replace all required parts; SoundFX Direct Fit
Fits 1984-1986 Chevrolet Camaro, N/A — High Output; If welded assembly, replace all required parts; SoundFX Direct Fit

Common Uses

Replacing a worn or rusted muffler on a Chevrolet Camaro or Pontiac Firebird
Restoring exhaust tone control after corrosion, leaks, or internal damage
Addressing fitment issues on select dual-catalytic-converter and single-catalytic-converter applications
Correcting exhaust noise caused by a damaged or failing factory-style muffler
Returning the exhaust system to a direct-fit configuration on supported vehicles

Installation Notes

Verify the inlet and outlet configuration before installation: 2.5-inch inlet, dual 2.25-inch outlets, offset inlet, and offset outlet layout. This muffler is not reversible and is not tunable. For welded assemblies, replace all required parts and follow the fitment notes for the specific Camaro or Firebird application. Confirm the exhaust routing and catalytic converter configuration before beginning installation.

Quality Assurance

Walker SoundFX Direct Fit mufflers use 100% aluminized steel for improved corrosion resistance versus low-carbon steel, along with mechanical interior joints and spun-locked heads for added durability. The SoundFX Direct Fit line is built to deliver a clean appearance and controlled exhaust acoustics for select Chevrolet Camaro and Pontiac Firebird applications.

This part fits 47 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Submodel	Liters	Cylinders	Position	Notes
1997	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, modifications and/or additional parts may be required.; SoundFX Direct Fit
1997	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1996	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, modifications and/or additional parts may be required.; SoundFX Direct Fit
1996	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1995	Chevrolet	Camaro	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1995	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1995	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, modifications and/or additional parts may be required.; SoundFX Direct Fit
1994	Chevrolet	Camaro	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1994	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, modifications and/or additional parts may be required.; SoundFX Direct Fit
1994	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1993	Chevrolet	Camaro	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1993	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, modifications and/or additional parts may be required.; SoundFX Direct Fit
1993	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1992	Chevrolet	Camaro	—	5.7L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1992	Pontiac	Firebird	—	5.0L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1992	Pontiac	Firebird	—	5.7L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1991	Chevrolet	Camaro	—	5.7L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1991	Pontiac	Firebird	—	5.0L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1991	Pontiac	Firebird	—	5.7L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1990	Chevrolet	Camaro	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1990	Chevrolet	Camaro	—	5.7L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1990	Pontiac	Firebird	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1990	Pontiac	Firebird	—	5.0L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1990	Pontiac	Firebird	—	5.7L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1989	Chevrolet	Camaro	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1989	Chevrolet	Camaro	—	5.7L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1989	Chevrolet	Camaro	—	5.7L	V8	N/A	with Single Catalytic Converter; If welded assembly, replace all required parts; SoundFX Direct Fit
1989	Pontiac	Firebird	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1989	Pontiac	Firebird	—	5.0L	V8	N/A	with Dual Catalytic Converters; If welded assembly, replace all required parts; SoundFX Direct Fit
1989	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1989	Pontiac	Firebird	—	3.8L	V6	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1988	Chevrolet	Camaro	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1988	Chevrolet	Camaro	—	5.7L	V8	N/A	with Single Catalytic Converter; If welded assembly, replace all required parts; SoundFX Direct Fit
1988	Pontiac	Firebird	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1988	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1987	Chevrolet	Camaro	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1987	Chevrolet	Camaro	—	5.7L	V8	N/A	with Single Catalytic Converter; If welded assembly, replace all required parts; SoundFX Direct Fit
1987	Pontiac	Firebird	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1987	Pontiac	Firebird	—	5.7L	V8	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1986	Chevrolet	Camaro	—	5.0L	V8	N/A	High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1986	Chevrolet	Camaro	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1986	Pontiac	Firebird	Trans Am	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1986	Pontiac	Firebird	—	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1985	Chevrolet	Camaro	—	5.0L	V8	N/A	High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1985	Pontiac	Firebird	Trans Am	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1984	Chevrolet	Camaro	—	5.0L	V8	N/A	High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1984	Pontiac	Firebird	Trans Am	5.0L	V8	N/A	with Single Catalytic Converter; High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
No rows match your filter.

Directly replaces or cross-references 3 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

AMS Automotive — 6584AP Exhaust — 700219TYC — 700359