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Walker 18801 Exhaust Muffler - Left
Walker SoundFX Direct Fit Muffler for Pontiac Grand Prix
Walker SoundFX Direct Fit muffler Part Number 18801 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 to match the original exhaust layout for a cleaner replacement on the left side.
The SoundFX Direct Fit line focuses on OE-style fitment, controlled exhaust tone, and durable construction. For drivers searching for a 1997-2002 Pontiac Grand Prix left muffler replacement, Walker 18801 provides a direct-fit solution with offset pipe connections and a combination muffler design.
Key Features
- Specific-fit exhaust muffler for select Pontiac Grand Prix models
- Walker SoundFX Direct Fit product line for OE-style replacement applications
- 100% aluminized steel body for added corrosion resistance compared with low-carbon steel
- Oval muffler shape with aluminized finish
- Offset inlet and outlet pipe connections for the listed application
- Mechanical interior joints and spun-locked heads for added durability
- Part Number 18801 for easy catalog matching
Detailed Description
Walker 18801 is an exhaust muffler engineered for the left side of 1997-2002 Pontiac Grand Prix vehicles with dual exhaust. It uses a 1.875-inch inlet and a 2.25-inch outlet, with an oval steel body measuring 17.25 inches overall length, 14 inches body length, 9 inches body width, and 7 inches body height. The offset inlet and outlet configuration supports the factory-style routing needed for this application.
As part of the Walker SoundFX Direct Fit line, this muffler is built for a straightforward replacement on the Pontiac Grand Prix while maintaining a quality appearance and controlled exhaust acoustics. If you are replacing a worn or damaged left-side muffler on a 1997-2002 Pontiac Grand Prix, Part Number 18801 is the direct-fit option to match the listed vehicle configuration.
This part cross-references AP Exhaust 700300 for the same application.
Common Replacement Reasons
- Rust or corrosion in the original muffler body
- Exhaust noise from a leaking or damaged muffler
- Restricted exhaust flow caused by internal deterioration
- Fitment issues after prior exhaust repairs on a Pontiac Grand Prix
- Need for a left-side replacement on dual-exhaust Grand Prix models
Installation Notes and Tips
Fits 1997-2002 Pontiac Grand Prix, left, with dual exhaust. If the exhaust uses a welded assembly, replace all required related parts to restore proper alignment and sealing. Verify inlet and outlet diameters, offset configuration, and left-side routing before installation. Part Number 18801 is intended for the listed specific-fit application and should be matched to the vehicle’s exhaust layout before service begins.
Quality Assurance
Walker SoundFX Direct Fit mufflers are built with aluminized steel, mechanical interior joints, and spun-locked heads to support durable service in exhaust system replacement applications. The product line is positioned for direct-fit replacement use on the specified Pontiac Grand Prix models.
| Brand | Walker |
|---|---|
| Part Number | 18801 |
| Position | SoundFX Direct Fit, Left |
| 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 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2002 | Pontiac | Grand Prix | 3.8L | V6 | Left | with Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2001 | Pontiac | Grand Prix | 3.8L | V6 | Left | with Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2000 | Pontiac | Grand Prix | 3.8L | V6 | Left | with Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1999 | Pontiac | Grand Prix | 3.8L | V6 | Left | with Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1998 | Pontiac | Grand Prix | 3.8L | V6 | Left | with Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1997 | Pontiac | Grand Prix | 3.8L | V6 | Left | with Dual Exhaust; If welded assembly, replace all required parts; SoundFX Direct Fit |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.