Walker 18980 Exhaust Muffler - Right
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Walker
 SoundFX Direct Fit

Walker 18980 Exhaust Muffler - Right

Brand Walker 18980
Position Right
Muffler Type Reflection
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 1.875
Body Width 10
Inlet Quantity 1
Reversible No
Tunable No
Overall Length 29
Body Height 8
Body Length 14
Body Material Steel
Finish Aluminized
Inlet 1 Inside Diameter 1.875
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 2.625
Inlet Type Pipe connection
Outlet 1 Outside Diameter 2.25
Outlet 1 Type Dual tips
Outlet 2 Outside Diameter 2.25
Outlet Configuration Offset
Outlet Outside Diameter 2.25
Outlet Quantity 2
Outlet Type Dual tips
Product line SoundFX Direct Fit
Fits Pontiac · 6 vehicles

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

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

Reflection muffler. Delivers quality appearance with favorable acoustics.

Cross-references AP Exhaust 700298 for the same application. See all 1.

$90.71Free shipping
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Step 2 — Quantity
Order total $90.71
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker SoundFX Direct Fit Muffler for Grand Prix

Walker SoundFX Direct Fit muffler Part Number 18980 is a specific-fit exhaust muffler for the right side of select Pontiac Grand Prix models. It uses an oval steel body with an aluminized finish to support longer service life than low-carbon steel construction, while the reflection-style internal design helps deliver controlled exhaust acoustics.

Key Features

  • Specific-fit exhaust muffler for 2003-2008 Pontiac Grand Prix, right side
  • Walker SoundFX Direct Fit line for OE-style replacement applications
  • Oval steel body with aluminized finish
  • Reflection muffler type for tuned exhaust sound control
  • Mechanical interior joints and spun-locked heads for added durability
  • Offset inlet and dual-tip outlet configuration
  • Part Number 18980 for catalog and fitment lookup

Product Details

Walker SoundFX Direct Fit Part Number 18980 is built for drivers replacing a worn rear exhaust muffler on a Pontiac Grand Prix with dual exhaust. The muffler measures 29 inches overall, with a 14-inch body length, 10-inch body width, and 8-inch body height. It uses a 1.875-inch inlet with offset configuration and dual 2.25-inch outlets, making it a direct-fit exhaust muffler for the right-side application listed. The SoundFX Direct Fit product line focuses on fitment accuracy, clean appearance, and balanced acoustics for everyday driving.

This part cross-references AP Exhaust 700298 for the same application.

Common Problems It Can Address

  • Rust or corrosion in the original muffler housing
  • Exhaust noise from a damaged or leaking muffler
  • Poor exhaust tone caused by internal muffler wear
  • Fitment issues when replacing a factory-style right-side muffler
  • Visible deterioration of the rear exhaust assembly

Installation Notes and Tips

Fits 2003-2008 Pontiac Grand Prix, right. Confirm the vehicle has dual exhaust before ordering, and verify inlet and outlet alignment against the existing exhaust routing. If the welded assembly is being serviced, replace all required related parts so the exhaust system seals and aligns correctly. Part Number 18980 is a specific-fit replacement, so matching the original configuration is important for proper installation.

Quality Assurance

Walker builds this muffler with 100% aluminized steel, mechanical interior joints, and spun-locked heads to support durability in exhaust service. The SoundFX Direct Fit line is positioned as a direct replacement solution for vehicles that need factory-style fitment and controlled acoustics.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2008PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
2007PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
2006PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
2005PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
2004PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
2003PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX 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 — 700298