Walker 18348 Exhaust Muffler

Brand	Walker 18348
Universal Or Specific Fit	Specific
Shape	Round
Grade Type	Regular
Inlet Inside Diameter	2
Body Width	7
Inlet Quantity	1
Outlet Inside Diameter	2
Outlet Quantity	1
Reversible	No
Tunable	No
Overall Length	24
Body Height	7
Body Length	20
Body Material	Steel
Finish	Aluminized
Inlet 1 Inside Diameter	2
Inlet 1 Type	Pipe connection
Inlet Configuration	Offset
Inlet Offset	1.75
Inlet Type	Pipe connection
Muffler Type	Combination
Outlet 1 Inside Diameter	2
Outlet 1 Type	Pipe connection
Outlet Configuration	Offset
Outlet Type	Pipe connection
Product line	SoundFX Direct Fit
Fits	Isuzu · 34 vehicles

Direct-fit design. Installs as a specific-fit muffler with no modifications needed.

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

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

Cross-references AMS Automotive 6530, Anchor 3279 and CSF 3761 for the same application. See all 4.

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Walker SoundFX Direct Fit Muffler for Isuzu

Walker SoundFX Direct Fit muffler Part Number 18348 is a specific-fit exhaust muffler for select Isuzu Trooper and Isuzu Pickup applications. It combines a round steel body with an aluminized finish to support longer service life than low-carbon steel designs, while maintaining a clean OE-style appearance and controlled exhaust acoustics.

Key Features

Specific-fit exhaust muffler for select Isuzu vehicles
Round muffler body with 7-inch body width and 7-inch body height
2-inch inlet and 2-inch outlet with pipe connection ends
Offset inlet and offset outlet configuration
Aluminized steel construction for improved corrosion resistance
Mechanical interior joints and spun-locked heads for added durability
Combination muffler design for direct-fit exhaust service

Product Details

Walker SoundFX Direct Fit Part Number 18348 is built for exhaust replacement on 1986-1991 Isuzu Trooper, 1988-1991 Isuzu Trooper with catalytic converter, 1986-1987 Isuzu Pickup, 1989-1990 Isuzu Pickup, and 1988-1989 Isuzu Pickup after 03/01/1988. This muffler uses 100% aluminized steel construction, a 20-inch body length, and a 24-inch overall length to match the listed application requirements. The offset inlet and outlet layout supports the factory-style routing used on these vehicles, making it a practical choice for restoring exhaust function on Isuzu Trooper and Isuzu Pickup models. This part cross-references AMS Automotive 6530 and Anchor 3279 for the same application.

Common Exhaust Problems It Can Address

Rust-through or corrosion in the original muffler
Excessive exhaust noise from a damaged muffler core or shell
Restricted exhaust flow caused by internal deterioration
Fitment issues when replacing a worn OE-style muffler
Loss of factory exhaust tone on select Isuzu Trooper and Isuzu Pickup models

Installation Notes and Tips

Verify the vehicle application, including model year and notes such as catalytic converter or production date requirements, before installation. Confirm the 2-inch inlet and outlet dimensions, offset configuration, and overall length against the existing exhaust system. Because this is a specific-fit muffler, it should be matched to the listed Isuzu Trooper and Isuzu Pickup applications rather than used as a universal replacement. Part Number 18348 is intended for direct-fit exhaust service on the vehicles shown in the fitment data.

Quality Assurance

Walker SoundFX Direct Fit mufflers are engineered with aluminized steel, mechanical interior joints, and spun-locked heads to support durability in exhaust service. The SoundFX Direct Fit line focuses on OE-style fitment and controlled acoustics for replacement applications.

This part fits 34 vehicles

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

Year	Make	Model	# Doors	Drive Type	Transmission	Liters	Cylinders	Wheel Base	Position	Notes
1991	Isuzu	Trooper	4 Door	—	—	2.8L	V6	—	N/A	SoundFX Direct Fit
1991	Isuzu	Trooper	—	—	—	2.6L	L4	—	N/A	with Catalytic Converter; SoundFX Direct Fit
1990	Isuzu	Pickup	—	4WD	—	2.6L	L4	—	N/A	SoundFX Direct Fit
1990	Isuzu	Pickup	—	RWD	—	2.6L	L4	—	N/A	SoundFX Direct Fit
1990	Isuzu	Pickup	—	4WD	—	2.3L	L4	—	N/A	SoundFX Direct Fit
1990	Isuzu	Pickup	—	RWD	—	2.3L	L4	105.6"	N/A	SoundFX Direct Fit
1990	Isuzu	Pickup	—	RWD	—	2.3L	L4	119.2"	N/A	SoundFX Direct Fit
1990	Isuzu	Trooper	4 Door	—	—	2.8L	V6	—	N/A	SoundFX Direct Fit
1990	Isuzu	Trooper	—	—	—	2.6L	L4	—	N/A	with Catalytic Converter; SoundFX Direct Fit
1990	Isuzu	Trooper	2 Door	—	Manual	2.6L	L4	—	N/A	SoundFX Direct Fit
1989	Isuzu	Pickup	—	4WD	—	2.6L	L4	—	N/A	After 03/01/1988; SoundFX Direct Fit
1989	Isuzu	Pickup	—	RWD	—	2.6L	L4	—	N/A	SoundFX Direct Fit
1989	Isuzu	Pickup	—	4WD	—	2.3L	L4	—	N/A	After 03/01/1988; SoundFX Direct Fit
1989	Isuzu	Pickup	—	RWD	—	2.3L	L4	105.6"	N/A	After 03/01/1988; SoundFX Direct Fit
1989	Isuzu	Pickup	—	RWD	—	2.3L	L4	119.2"	N/A	After 03/01/1988; SoundFX Direct Fit
1989	Isuzu	Trooper	4 Door	—	—	2.8L	V6	—	N/A	SoundFX Direct Fit
1989	Isuzu	Trooper	—	—	—	2.6L	L4	—	N/A	with Catalytic Converter; SoundFX Direct Fit
1989	Isuzu	Trooper	2 Door	—	Manual	2.6L	L4	—	N/A	SoundFX Direct Fit
1988	Isuzu	Pickup	—	4WD	—	2.6L	L4	—	N/A	After 03/01/1988; SoundFX Direct Fit
1988	Isuzu	Pickup	—	4WD	—	2.3L	L4	—	N/A	After 03/01/1988; SoundFX Direct Fit
1988	Isuzu	Pickup	—	RWD	—	2.6L	L4	—	N/A	After 03/01/1988; SoundFX Direct Fit
1988	Isuzu	Pickup	—	RWD	—	2.3L	L4	105.6"	N/A	After 03/01/1988; SoundFX Direct Fit
1988	Isuzu	Pickup	—	RWD	—	2.3L	L4	119.2"	N/A	After 03/01/1988; SoundFX Direct Fit
1988	Isuzu	Trooper	—	—	—	2.6L	L4	—	N/A	with Catalytic Converter; SoundFX Direct Fit
1988	Isuzu	Trooper	2 Door	—	Manual	2.6L	L4	—	N/A	SoundFX Direct Fit
1987	Isuzu	Pickup	—	4WD	—	2.3L	L4	—	N/A	SoundFX Direct Fit
1987	Isuzu	Pickup	—	RWD	—	2.3L	L4	—	N/A	SoundFX Direct Fit
1987	Isuzu	Pickup	—	—	—	2.2L	L4	—	N/A	SoundFX Direct Fit
1987	Isuzu	Trooper	—	—	—	2.3L	L4	—	N/A	SoundFX Direct Fit
1987	Isuzu	Trooper	—	—	—	2.2L	L4	—	N/A	SoundFX Direct Fit
1986	Isuzu	Pickup	—	4WD	—	2.3L	L4	—	N/A	SoundFX Direct Fit
1986	Isuzu	Pickup	—	RWD	—	2.3L	L4	—	N/A	SoundFX Direct Fit
1986	Isuzu	Trooper	—	—	—	2.3L	L4	—	N/A	SoundFX Direct Fit
1986	Isuzu	Trooper	—	—	—	2.2L	L4	—	N/A	SoundFX Direct Fit
No rows match your filter.

Directly replaces or cross-references 4 part numbers

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

AMS Automotive — 6530Anchor — 3279CSF — 3761166-053

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