Walker 55633 Exhaust Muffler Assembly - Front

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 55633 is a direct-fit exhaust muffler assembly built with stainless steel body and muffler construction for longer service life than typical aluminized replacements. It uses an OE-style layout with a 3-bolt welded flange inlet, center outlet, and oval reflection muffler design for select Audi front exhaust applications.

Compatible with front exhaust service on 2009-2013 Audi A4, 2009-2012 Audi A4 Quattro, 2010-2011 Audi A5, and 2010-2011 Audi A5 Quattro. This Walker Quiet-Flow SS 55633 muffler assembly is a fitment-specific replacement for vehicles that require the listed flange and outlet configuration.

Key Features

• Stainless steel body and muffler material for corrosion resistance
• OE-style direct-fit muffler assembly for front exhaust replacement
• Oval reflection muffler design
• 3-bolt welded flange inlet with offset inlet configuration
• Center outlet with 2.5 in. outside diameter pipe connection
• Natural finish
• Overall length: 47.625 in.
• Walker Quiet-Flow SS 55633 for select Audi A4, A4 Quattro, A5, and A5 Quattro applications

Product Details

The Quiet-Flow SS product line focuses on stainless-steel construction and direct-fit OE-style replacement geometry. For buyers servicing a front exhaust muffler on a compatible Audi A4, Audi A4 Quattro, Audi A5, or Audi A5 Quattro, this assembly provides the correct inlet and outlet arrangement, oval body shape, and reflection-style muffler design needed for a proper replacement. Walker 55633 is built for domestic and foreign vehicle applications where the original exhaust layout calls for a flange-mounted inlet and center outlet connection.

This part cross-references BRExhaust 279-613 for the same application.

Common Problems This Part Addresses

• Rust or corrosion in the original muffler assembly
• Exhaust leaks at the muffler inlet flange
• Excessive exhaust noise from a damaged muffler body
• Fitment issues when replacing a front exhaust muffler with the wrong outlet configuration
• Loss of OE-style exhaust routing on select Audi models

Installation Notes and Tips

Verify the vehicle’s year, model, and front position before ordering. Confirm the inlet type, outlet type, and 2.5 in. outlet diameter match the original exhaust layout on the vehicle. Because this is a direct-fit muffler assembly, installation should follow the factory routing and connection points for the listed Audi applications.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are engineered as stainless-steel OE-style replacements for longer life than typical aluminized mufflers. Part number 55633 is listed for 2009-2013 Audi A4, 2009-2012 Audi A4 Quattro, 2010-2011 Audi A5, and 2010-2011 Audi A5 Quattro front exhaust applications.