Walker 54845 Exhaust Muffler Assembly

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 54845 is a direct-fit exhaust muffler assembly built with stainless-steel body and muffler construction for longer service life than typical aluminized replacements. It is made for a clean OE-style replacement on select Mazda 5 models and uses an offset inlet and offset outlet layout for proper exhaust routing.

Key Features

• Stainless-steel muffler assembly with natural finish
• Direct-fit OE-style replacement for select Mazda 5 applications
• Oval reflection-style muffler design
• 2-bolt welded flange inlet for secure connection
• Offset inlet and offset outlet configuration
• Inlet outside diameter: 1.75 in.
• Outlet tip outside diameter: 2.375 in.
• Overall length: 46.5 in.
• Walker Quiet-Flow SS line focuses on stainless-steel construction for extended durability

Product Details

This Walker Quiet-Flow SS muffler assembly, part number 54845, is engineered as a direct replacement exhaust component for 2006-2010 Mazda 5 and 2012-2015 Mazda 5 models. The oval stainless-steel body measures 9 inches wide, 9 inches in diameter, 7 inches high, and 12 inches in body length, with a reflection-type muffler design that follows the original exhaust layout. This part cross-references AP Exhaust 40173 for the same application.

Common Issues It Can Help Address

• Rust-through or corrosion in the original muffler assembly
• Exhaust noise caused by a damaged internal muffler structure
• Fitment problems from a worn or mismatched replacement muffler
• Restricted exhaust flow from a deteriorated factory unit
• Need for an OE-style stainless-steel replacement on a Mazda 5 exhaust system

Installation Notes and Tips

Verify inlet diameter, outlet tip size, and flange style before installation. This muffler assembly uses a 2-bolt welded flange inlet and an offset outlet configuration, so alignment with the existing exhaust system is important. Confirm vehicle year and application details for your Mazda 5 before ordering. Fits 2006-2010 Mazda 5, N/A. Fits 2012-2015 Mazda 5, N/A.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless-steel construction and OE-style fitment to support long-term replacement performance. Part number 54845 is part of Walker’s Quiet-Flow SS product line, which is positioned for direct-fit exhaust service on domestic and foreign vehicles.