OE Quality
60-Day Returns

Walker 18949 Exhaust Muffler - Right
Overview of Walker SoundFX Direct Fit Exhaust Muffler 18949
The Walker SoundFX Direct Fit Exhaust Muffler 18949 is designed specifically for Chevrolet Impala models, providing a precise fit and reliable performance. This oval-shaped muffler features a durable aluminized steel body and is engineered to meet regular grade requirements for everyday driving conditions.
- Specific fit for Chevrolet Impala
- Oval body shape with 9-inch width and 7-inch height
- Aluminized steel construction for corrosion resistance
- 1.875-inch inlet inside diameter with offset pipe connection
- Single inlet and outlet with 2.25-inch outlet diameter
- Overall length of 32.5 inches and body length of 14 inches
- Combination muffler type with offset inlet and outlet configuration
Detailed Product Description
The Walker SoundFX Direct Fit 18949 exhaust muffler is engineered to provide a direct replacement for the Chevrolet Impala exhaust system. Its oval-shaped body measures 9 inches in width and 7 inches in height, with a length of 14 inches, fitting precisely within the vehicle’s exhaust layout. The muffler features a single inlet and outlet, both offset to optimize exhaust flow and reduce backpressure. The inlet pipe connection has an inside diameter of 1.875 inches, while the outlet tip measures 2.25 inches in outside diameter, ensuring compatibility with the Impala’s exhaust piping. Constructed from aluminized steel, this muffler offers resistance to rust and corrosion, extending the service life under typical driving conditions. The combination muffler type balances sound attenuation and exhaust flow, maintaining vehicle performance while reducing noise.
Walker SoundFX Direct Fit Product Line
The SoundFX Direct Fit line by Walker focuses on providing vehicle-specific exhaust components that simplify installation and maintain factory sound characteristics. This product line is designed to offer a direct fit solution without the need for modifications, making it suitable for Chevrolet Impala owners seeking a reliable replacement muffler that aligns with original equipment specifications.
Common Applications and Problem Solving
- Replacement for damaged or rusted mufflers on Chevrolet Impala
- Reduction of excessive exhaust noise due to muffler wear
- Restoration of proper exhaust flow and backpressure balance
- Improvement of exhaust system durability with aluminized steel construction
- Maintaining factory exhaust sound and performance characteristics
Installation Notes and Tips
Installation of the Walker SoundFX Direct Fit 18949 muffler requires compatibility with the Chevrolet Impala exhaust system. The offset inlet and outlet configuration should be aligned carefully to ensure proper fitment. It is recommended to inspect exhaust hangers and clamps during installation to secure the muffler firmly and prevent vibrations. Professional installation is advised to maintain exhaust system integrity and performance.
Quality Assurance and Warranty
Walker manufactures the SoundFX Direct Fit 18949 muffler with quality materials and precise engineering to meet OEM standards. The aluminized steel body provides corrosion resistance for extended durability. While specific warranty details are not provided, Walker products typically adhere to industry standards for quality and reliability.
| Brand | Walker |
|---|---|
| Part Number | 18949 |
| Position | SoundFX Direct Fit, Right |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 1.875 |
| Body Width | 9 |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 32.5 |
| 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 Outside Diameter | 2.25 |
| Outlet 1 Type | Tip |
| Outlet Configuration | Offset |
| Outlet Outside Diameter | 2.25 |
| Outlet Type | Tip |
This part fits 10 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Chevrolet | Impala | 3.9L | V6 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2010 | Chevrolet | Impala | 3.9L | V6 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2009 | Chevrolet | Impala | 3.9L | V6 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2009 | Chevrolet | Impala | 5.3L | V8 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2008 | Chevrolet | Impala | 3.9L | V6 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2008 | Chevrolet | Impala | 5.3L | V8 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2007 | Chevrolet | Impala | 3.9L | V6 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2007 | Chevrolet | Impala | 5.3L | V8 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2006 | Chevrolet | Impala | 3.9L | V6 | Right | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2006 | Chevrolet | Impala | 5.3L | V8 | Right | 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.