OE Quality
60-Day Returns

Walker 55630 Exhaust Muffler Assembly - Left
Walker Quiet-Flow Muffler Assembly 55630
Walker Quiet-Flow 55630 is a direct-fit exhaust muffler assembly built for OE-style replacement on select vehicles. It combines a precision-fit layout with a steel, aluminized construction and a quiet exhaust tone for drivers replacing a worn rear exhaust component.
Compatible With 2005-2009 Audi A4 Quattro, left side, this muffler assembly is shaped for the factory exhaust routing and uses a 2-inch pipe connection with a 3-inch tip outlet. The irregular body design and offset inlet/outlet configuration support a factory-style installation on the specified application.
Key Features
- Walker Quiet-Flow product line for OE-style exhaust replacement
- Direct-fit muffler assembly for select Audi A4 Quattro applications
- Aluminized steel finish for corrosion resistance in everyday use
- Steel muffler and body construction
- Offset inlet and offset outlet configuration
- 2-inch inlet outside diameter with 3-inch tip outlet
- Irregular muffler shape with 46.5-inch overall length
Product Details
Walker Quiet-Flow muffler assemblies are built to match factory-style exhaust fitment and sound characteristics while maintaining strong flow through the exhaust path. Part number 55630 is specified for the left-side position on 2005-2009 Audi A4 Quattro models and uses a pipe connection inlet with a tip-style outlet. The aluminized steel finish and steel body construction are selected for standard exhaust service conditions.
This part cross-references BRExhaust (e.g., 278-747, 280-661) for the same application. For shoppers searching for a 2005-2009 Audi A4 Quattro left muffler assembly, Walker 55630 provides a direct-fit OE-style replacement option.
Common Problems This Part Can Address
- Rust-through or corrosion in the original muffler assembly
- Exhaust noise caused by a damaged or leaking muffler
- Poor factory exhaust fit after prior repair work
- Need for a replacement left-side muffler on Audi A4 Quattro models
- Loss of OE-style exhaust tone from a worn assembly
Installation Notes
Verify the vehicle year, left-side position, inlet diameter, and outlet configuration before installation. This muffler assembly is made for the listed Audi A4 Quattro fitment and should be matched to the factory exhaust routing and connection points. Check surrounding exhaust components for wear, corrosion, or damage before completing the repair.
Quality Assurance
Walker Quiet-Flow 55630 is part of a direct-fit OE-style replacement line with coverage for domestic and foreign vehicles. Its design focuses on precision fit, steady exhaust flow, and factory-style sound for the specified application.
| Brand | Walker |
|---|---|
| Part Number | 55630 |
| Position | Quiet-Flow, Left |
| Inlet Outside Diameter | 2 |
| Finish | Aluminized |
| Body Diameter | 11.63 |
| Inlet Type | Pipe connection |
| Outlet Type | Tip |
| Body Height | 7.46 |
| Body Length | 17.21 |
| Muffler Material | Steel |
| Muffler Shape | Irregular |
| Overall Length | 46.5 |
| Body Material | Steel |
| Body Width | 11.63 |
| Grade Type | Regular |
| Inlet 1 Outside Diameter | 2 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Quantity | 1 |
| Muffler Type | Combination |
| Outlet 1 Outside Diameter | 3 |
| Outlet 1 Type | Tip |
| Outlet Configuration | Offset |
| Outlet Quantity | 1 |
| Shape | Irregular |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2009 | Audi | A4 Quattro | Cabriolet | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2009 | Audi | A4 Quattro | Cabriolet | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2008 | Audi | A4 Quattro | Cabriolet | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2008 | Audi | A4 Quattro | Base | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2008 | Audi | A4 Quattro | Base | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2008 | Audi | A4 Quattro | Cabriolet | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2008 | Audi | A4 Quattro | Avant | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2008 | Audi | A4 Quattro | Avant | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2007 | Audi | A4 Quattro | Cabriolet | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2007 | Audi | A4 Quattro | Base | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2007 | Audi | A4 Quattro | Base | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2007 | Audi | A4 Quattro | Cabriolet | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2007 | Audi | A4 Quattro | Avant | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2007 | Audi | A4 Quattro | Avant | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2006 | Audi | A4 Quattro | Base | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2006 | Audi | A4 Quattro | Base | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2006 | Audi | A4 Quattro | Avant | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2006 | Audi | A4 Quattro | Avant | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2005 | Audi | A4 Quattro | Base | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2005 | Audi | A4 Quattro | Base | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2005 | Audi | A4 Quattro | Avant | 3.2L | V6 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
| 2005 | Audi | A4 Quattro | Avant | 2.0L | L4 | Left | Premium; Limited Lifetime Warranty; Quiet-Flow |
* 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.