Walker 18389 Exhaust Muffler
OE Quality 60-Day Returns
Walker
 SoundFX Direct Fit

Walker 18389 Exhaust Muffler

Brand Walker 18389
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 2
Body Width 8.813
Inlet Quantity 1
Outlet Inside Diameter 2.125
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 17
Body Height 4.25
Body Length 13
Body Material Steel
Finish Aluminized
Inlet 1 Inside Diameter 2
Inlet 1 Type Pipe connection
Inlet Configuration Center
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Inside Diameter 2.125
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line SoundFX Direct Fit
Fits Jeep · 10 vehicles

Direct-fit replacement. Installs as a specific-fit exhaust muffler with no guesswork.

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.

$45.64Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $45.64
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker SoundFX Direct Fit Muffler for Jeep CJ

Walker SoundFX Direct Fit muffler Part Number 18389 is a specific-fit exhaust muffler built for select Jeep CJ applications. It combines an oval steel body with aluminized finish for improved corrosion resistance and a direct-fit layout that matches the listed inlet and outlet configuration.

Key Features

  • Specific-fit exhaust muffler for select Jeep CJ7 and CJ5 applications
  • Oval muffler body with 17-inch overall length
  • 100% aluminized steel construction for longer service life than low-carbon steel
  • Mechanical interior joints and spun-locked heads for added durability
  • Center inlet and offset outlet pipe connection layout
  • Walker SoundFX Direct Fit line for OE-style replacement fitment

Product Details

The Walker SoundFX Direct Fit muffler Part Number 18389 is engineered for direct replacement use on 1983-1986 Jeep CJ7 and 1983 Jeep CJ5 models, including AMC engine applications where noted. It uses a 2-inch center inlet and a 2.125-inch offset outlet, with an oval steel body measuring 13 inches long, 8.813 inches wide, and 4.25 inches high. The aluminized finish helps resist exhaust-system wear, while the internal construction is built to maintain a quality appearance and controlled exhaust tone.

The SoundFX Direct Fit product line focuses on replacement mufflers that match the original exhaust layout and mounting style for listed vehicles. For Jeep CJ7 exhaust muffler replacement and Jeep CJ5 direct-fit muffler service, Part Number 18389 provides a vehicle-specific solution without requiring a universal fit approach.

What It Helps Address

  • Exhaust noise from a worn or damaged muffler
  • Rust-related muffler deterioration in the exhaust system
  • Fitment issues from using a universal muffler on a specific Jeep CJ application
  • Loss of proper exhaust routing at the inlet and outlet connection points
  • Replacement needs on 1983-1986 Jeep CJ7 and 1983 Jeep CJ5 exhaust systems

Installation Notes and Tips

Compatible With 1983-1986 Jeep CJ7, N/A; 1983 Jeep CJ5, N/A; and 1983 Jeep CJ7, N/A. If the exhaust uses a welded assembly, replace all required parts to complete the repair correctly. Verify inlet and outlet orientation before installation, since this muffler uses a center inlet and offset outlet configuration.

Quality Assurance

Walker builds this muffler with 100% aluminized steel, mechanical interior joints, and spun-locked heads to support durability in exhaust service. Part Number 18389 is part of the Walker SoundFX Direct Fit line, which is designed around specific vehicle applications for consistent replacement fitment.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1986JeepCJ72.5LL4N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
1986JeepCJ74.2LL6N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
1985JeepCJ72.5LL4N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
1985JeepCJ74.2LL6N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
1984JeepCJ72.5LL4N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
1984JeepCJ74.2LL6N/AIf welded assembly, replace all required parts; SoundFX Direct Fit
1983JeepCJ54.2LL6N/Awith AMC Engine; If welded assembly, replace all required parts; SoundFX Direct Fit
1983JeepCJ52.5LL4N/Awith AMC Engine; If welded assembly, replace all required parts; SoundFX Direct Fit
1983JeepCJ72.5LL4N/Awith AMC Engine; If welded assembly, replace all required parts; SoundFX Direct Fit
1983JeepCJ74.2LL6N/AIf welded assembly, replace all required parts; SoundFX Direct Fit