Walker 18890 Exhaust Muffler
OE Quality 60-Day Returns
Walker
 SoundFX Direct Fit

Walker 18890 Exhaust Muffler

Brand Walker 18890
Inlet Outside Diameter 2.5
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Body Width 9
Inlet Quantity 1
Outlet Inside Diameter 2.5
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 37.5
Body Height 7
Body Length 30
Body Material Steel
Finish Aluminized
Inlet 1 Outside Diameter 2.5
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 1.625
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Inside Diameter 2.5
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line SoundFX Direct Fit
Fits Dodge · 18 vehicles

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

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

SoundFX acoustics. Delivers a quality appearance with favorable exhaust tone.

Cross-references AP Exhaust 700442 for the same application. See all 1.

$101.66Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
Step 2 — Quantity
Order total $101.66
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 Ram 1500

Walker SoundFX Direct Fit muffler Part Number 18890 is built for 2002-2005 Dodge Ram 1500 applications with a specific-fit, direct replacement design. It uses 100% aluminized steel for improved service life versus low-carbon steel and is shaped to deliver a clean OE-style appearance with controlled exhaust sound.

Key Features

  • Direct-fit exhaust muffler for 2002-2005 Dodge Ram 1500
  • Oval combination muffler design with offset inlet and outlet
  • 2.5-inch inlet and 2.5-inch outlet pipe connections
  • Aluminized steel body for corrosion resistance and longer service life
  • Mechanical interior joints and spun-locked heads for added durability
  • Walker SoundFX Direct Fit line focuses on fit, finish, and balanced acoustics
  • Part Number 18890 for easy catalog matching

Product Details

Walker Part Number 18890 is a specific-fit exhaust muffler for the Dodge Ram 1500, covering 2002, 2003, 2004, and 2005 model years. The oval steel body measures 30 inches long, 9 inches wide, and 7 inches high, with an overall length of 37.5 inches. Its offset inlet and outlet layout, along with 2.5-inch pipe connections, supports a direct replacement installation on the listed Ram 1500 applications. This part cross-references AP Exhaust 700442 for the same application.

Common Reasons to Replace

  • Exhaust noise has become louder or harsher than normal
  • Rust or corrosion is visible on the muffler body
  • Internal baffles or joints have deteriorated
  • Factory-style exhaust tone needs to be restored
  • Existing muffler fitment no longer matches the original routing

Installation Notes and Tips

Confirm the vehicle is a 2002-2005 Dodge Ram 1500 before ordering. Match the 2.5-inch inlet and outlet sizes, along with the offset configuration, to the existing exhaust layout. Because this is a specific-fit muffler, proper alignment with the factory exhaust path is important for a clean installation and correct hang position.

Quality Assurance

Walker SoundFX Direct Fit mufflers are built with aluminized steel, mechanical interior joints, and spun-locked heads to support durability in everyday exhaust service. Part Number 18890 is engineered as a direct replacement for the listed Ram 1500 fitment.

Related reading

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersWheel BasePositionNotes
2005DodgeRam 15003.7LV6—N/ASoundFX Direct Fit
2005DodgeRam 15004.7LV8—N/ASoundFX Direct Fit
2004DodgeRam 15003.7LV6—N/ASoundFX Direct Fit
2004DodgeRam 15004.7LV8—N/ASoundFX Direct Fit
2003DodgeRam 15004.7LV8120.5"N/ASoundFX Direct Fit
2003DodgeRam 15005.9LV8160.5"N/ASoundFX Direct Fit
2003DodgeRam 15005.9LV8140.5"N/ASoundFX Direct Fit
2003DodgeRam 15004.7LV8160.5"N/ASoundFX Direct Fit
2003DodgeRam 15005.9LV8120.5"N/ASoundFX Direct Fit
2003DodgeRam 15004.7LV8140.5"N/ASoundFX Direct Fit
2003DodgeRam 15003.7LV6—N/ASoundFX Direct Fit
2002DodgeRam 15004.7LV8120.5"N/ASoundFX Direct Fit
2002DodgeRam 15005.9LV8160.5"N/ASoundFX Direct Fit
2002DodgeRam 15005.9LV8140.5"N/ASoundFX Direct Fit
2002DodgeRam 15004.7LV8160.5"N/ASoundFX Direct Fit
2002DodgeRam 15005.9LV8120.5"N/ASoundFX Direct Fit
2002DodgeRam 15004.7LV8140.5"N/ASoundFX Direct Fit
2002DodgeRam 15003.7LV6—N/ASoundFX Direct Fit
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 700442