Walker 18220 Exhaust Muffler

Brand	Walker 18220
Universal Or Specific Fit	Specific
Shape	Oval
Grade Type	Regular
Inlet Inside Diameter	2.5
Body Width	9.75
Inlet Quantity	1
Outlet Quantity	1
Reversible	No
Tunable	No
Overall Length	35
Body Height	4.25
Body Length	21
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 Outside Diameter	2.25
Outlet 1 Type	Pipe connection
Outlet Configuration	Center
Outlet Outside Diameter	2.25
Outlet Type	Pipe connection
Product line	SoundFX Direct Fit
Fits	Chevrolet and GMC · 20 vehicles

Direct-fit design. Installs as a specific replacement with a pipe-connection layout.

Aluminized steel. Helps resist corrosion for longer service life than low-carbon steel.

Mechanical interior joints. Spun-locked heads add durability and help maintain a quality appearance.

Cross-references AP Exhaust 9206 and AP Exhaust 700020 for the same application. See all 2.

$76.09Free shipping

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Walker SoundFX Direct Fit Muffler for S10 and Sonoma

Walker SoundFX Direct Fit muffler Part Number 18220 is a specific-fit exhaust muffler built for select Chevrolet S10 and GMC Sonoma applications. It uses aluminized steel construction and a direct-fit layout to match the original exhaust routing on confirmed vehicles.

Key Features

Specific-fit exhaust muffler for confirmed vehicle applications
Oval muffler body with a steel construction and aluminized finish
2.5-inch inlet inside diameter with offset inlet configuration
2.25-inch center outlet for direct exhaust routing
Mechanical interior joints and spun-locked heads for added durability
Walker SoundFX Direct Fit line focused on quality appearance and controlled acoustics

Product Details

Walker 18220 is a combination-style exhaust muffler engineered for direct replacement use on 1992-1994 Chevrolet S10 and 1992-1994 GMC Sonoma models, including 1992-1993 Chevrolet S10 and GMC Sonoma without High Output. The oval body measures 35 inches overall, with a 21-inch body length, 9.75-inch body width, and 4.25-inch body height. The aluminized steel finish helps resist corrosion better than low-carbon steel, while the direct-fit design supports a cleaner installation on the specified vehicles. This part cross-references AP Exhaust 9206 and 700020 for the same application. Walker 18220 is a practical choice when replacing a worn muffler on a Chevrolet S10 or GMC Sonoma exhaust system.

Common Exhaust Issues This Muffler Can Address

Excessive exhaust noise from a damaged or rusted muffler
Corrosion-related muffler failure on older truck exhaust systems
Restricted exhaust flow caused by internal deterioration
Fitment problems when replacing a factory-style muffler on confirmed applications
Unwanted rattles or leaks from a compromised muffler shell or joints

Installation Notes and Tips

Verify inlet and outlet sizing before installation: 2.5-inch inlet, 2.25-inch outlet, offset inlet, and center outlet. This muffler is not reversible or tunable, so orientation should match the vehicle’s exhaust layout. For welded assemblies, replace all required parts as noted in the fitment data to ensure proper alignment on the exhaust system.

Quality Assurance

Walker SoundFX Direct Fit mufflers are built with aluminized steel, mechanical interior joints, and spun-locked heads to support long service life and consistent fit on the listed applications. Part Number 18220 is made for confirmed Chevrolet S10 and GMC Sonoma fitment.

This part fits 20 vehicles

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

Year	Make	Model	Drive Type	Liters	Cylinders	Wheel Base	Position	Notes
1994	Chevrolet	S10	RWD	4.3L	V6	122.9"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1994	Chevrolet	S10	RWD	4.3L	V6	118.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1994	GMC	Sonoma	RWD	4.3L	V6	123.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1994	GMC	Sonoma	RWD	4.3L	V6	118.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1993	Chevrolet	S10	RWD	4.3L	V6	122.9"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1993	Chevrolet	S10	RWD	2.8L	V6	118.0"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1993	Chevrolet	S10	RWD	4.3L	V6	118.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1993	Chevrolet	S10	RWD	2.8L	V6	122.9"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1993	GMC	Sonoma	RWD	4.3L	V6	123.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1993	GMC	Sonoma	RWD	2.8L	V6	123.0"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1993	GMC	Sonoma	RWD	4.3L	V6	118.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1993	GMC	Sonoma	RWD	2.8L	V6	118.0"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1992	Chevrolet	S10	RWD	2.8L	V6	118.0"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1992	Chevrolet	S10	RWD	4.3L	V6	122.9"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1992	Chevrolet	S10	RWD	4.3L	V6	118.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1992	Chevrolet	S10	RWD	2.8L	V6	122.9"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1992	GMC	Sonoma	RWD	4.3L	V6	123.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1992	GMC	Sonoma	RWD	2.8L	V6	123.0"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
1992	GMC	Sonoma	RWD	4.3L	V6	118.0"	N/A	If welded assembly, replace all required parts; SoundFX Direct Fit
1992	GMC	Sonoma	RWD	2.8L	V6	118.0"	N/A	without High Output; If welded assembly, replace all required parts; SoundFX Direct Fit
No rows match your filter.

Directly replaces or cross-references 2 part numbers

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

AP Exhaust — 9206AP Exhaust — 700020