Walker 55634 Exhaust Muffler Assembly - Left

Walker Quiet-Flow Muffler Assembly

Walker Quiet-Flow 55634 is a direct-fit exhaust muffler assembly built for OE-style replacement on select Audi applications. It combines a precision-fit design with aluminized steel construction and a combination muffler layout to support proper exhaust flow and a controlled sound profile.

Compatible with 2004-2005 Audi A4, left side, and 2002-2005 Audi A4 Quattro, left side. This Walker Quiet-Flow muffler assembly is a practical choice when replacing a worn or damaged rear exhaust component on these vehicles.

Key Features

• Direct-fit OE-style exhaust muffler assembly
• Walker Quiet-Flow product line for precision replacement applications
• Aluminized steel body and muffler material for corrosion resistance
• Combination muffler type with irregular body shape
• Offset inlet and offset outlet configuration
• Pipe connection inlet and tip-style outlet
• Designed for select Audi A4 and Audi A4 Quattro left-side applications

Product Details

Walker Quiet-Flow 55634 is engineered as an exhaust muffler assembly with a 1.75-inch inlet outside diameter, 1.772-inch inlet inside diameter, and a 3-inch outlet outside diameter. The muffler uses an irregular shape with a 17.21-inch body length, 11.63-inch body width, and 7.46-inch body height, with an overall length of 46.5 inches. Its aluminized steel construction supports long-term service in everyday exhaust environments while maintaining OE-style fitment and sound characteristics.

The Quiet-Flow line is positioned for drivers who need a replacement muffler assembly that follows factory-style dimensions and exhaust routing. Walker 55634 is a relevant search match for Audi A4 muffler replacement and Audi A4 Quattro exhaust muffler assembly applications where left-side fitment is required. This part cross-references BRExhaust (e.g., 280-669, 280-671) for the same application.

Common Problems It Can Address

• Exhaust noise from a rusted or leaking muffler assembly
• Reduced exhaust flow caused by internal muffler deterioration
• Fitment issues from a damaged or previously modified rear exhaust section
• Corrosion-related failure in the original muffler housing
• Need for an OE-style replacement on select Audi A4 and A4 Quattro models

Installation Notes and Tips

Verify inlet and outlet diameters, offset configuration, and left-side placement before installation. This muffler assembly uses a pipe connection inlet and tip outlet, so matching the existing exhaust routing is important for proper alignment. Confirm vehicle year, model, and drivetrain application against the listed fitment before ordering.

Fits 2004-2005 Audi A4, left side. Fits 2002-2005 Audi A4 Quattro, left side.

Quality Assurance

Walker Quiet-Flow muffler assemblies are built as direct-fit OE-style replacements with coverage for domestic and foreign vehicles. The Quiet-Flow line is designed to deliver precision fit, consistent exhaust flow, and OE-style sound characteristics for the specified applications.