Walker
SoundFX Direct Fit

Walker 18576 Exhaust Muffler - Right

Brand Walker 18576
Position Right
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 1.875
Body Width 9
Inlet Quantity 1
Outlet Inside Diameter 2.25
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 17.25
Body Height 7
Body Length 14
Body Material Steel
Finish Aluminized
Inlet 1 Inside Diameter 1.875
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 1.625
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Inside Diameter 2.25
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line SoundFX Direct Fit
Fits Pontiac · 6 vehicles

Direct-fit design. Installs as a specific-fit exhaust 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 help maintain a quality appearance.

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

$63.12Free 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 — free returns if it doesn't
Step 2 — Quantity
Order total $63.12
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Walker SoundFX Direct Fit Muffler for Grand Prix

Walker SoundFX Direct Fit muffler Part Number 18576 is a specific-fit exhaust muffler for select Pontiac Grand Prix applications. It is built with aluminized steel for improved service life versus low-carbon steel and is shaped for a direct replacement on the right side of dual-exhaust vehicles.

Key Features

  • Specific-fit exhaust muffler for confirmed vehicle application
  • Oval steel body with aluminized finish
  • Offset inlet and outlet pipe connections for direct-fit routing
  • 1.875-inch inlet inside diameter and 2.25-inch outlet inside diameter
  • Mechanical interior joints and spun-locked heads for added durability
  • Walker SoundFX Direct Fit line focuses on OE-style fit and controlled exhaust acoustics

Product Details

Walker SoundFX Direct Fit Part Number 18576 is engineered for 1997-2002 Pontiac Grand Prix, right side, with dual exhaust. The muffler uses a combination design with an oval body measuring 17.25 inches overall, 14 inches body length, 9 inches body width, and 7 inches body height. Its aluminized steel construction helps resist corrosion better than low-carbon steel, while the offset inlet and outlet configuration supports a direct replacement layout. This part cross-references AP Exhaust 700298 for the same application.

What This Muffler Helps Address

  • Exhaust noise that has become louder due to a worn muffler
  • Rust or corrosion on the original muffler body
  • Fitment issues when replacing a right-side dual-exhaust muffler
  • Loss of factory-style exhaust tone after muffler damage
  • Replacement needs for a direct-fit Pontiac Grand Prix exhaust repair

Installation Notes and Tips

Fits 1997-2002 Pontiac Grand Prix, right. Confirm the vehicle has dual exhaust before ordering, and verify inlet and outlet diameters against the existing exhaust system. If the original assembly was welded, replace all required related parts during service to restore proper alignment and sealing. Part Number 18576 is a direct-fit muffler, so matching the vehicle’s exhaust routing is important for correct installation.

Quality Assurance

Walker SoundFX Direct Fit mufflers are built with 100% aluminized steel and reinforced internal construction details to support long-term durability and consistent fit. Part Number 18576 follows the SoundFX Direct Fit product line approach to replacement exhaust components with OE-style appearance and acoustics.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2002PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
2001PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
2000PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
1999PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
1998PontiacGrand Prix3.8LV6Rightwith Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit
1997PontiacGrand 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