Walker 55649 Exhaust Muffler Assembly

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 55649 is a direct-fit exhaust muffler assembly built for the 2010-2015 Lexus RX350. It uses stainless-steel construction and an OE-style layout to replace the factory muffler with a serviceable, vehicle-specific part.

The Quiet-Flow SS line focuses on stainless-steel muffler assemblies for domestic and foreign vehicles, giving buyers a direct replacement option where long-term corrosion resistance and factory-style fitment matter. This Walker 55649 muffler assembly is shaped as an oval unit with a center inlet and offset outlet configuration.

• Stainless-steel muffler body and muffler material
• Direct-fit OE-style exhaust muffler assembly
• Oval muffler shape with natural finish
• 2.25 in. inlet outside diameter
• 2-bolt welded flange inlet connection
• 2.25 in. outlet inside diameter with pipe connection
• Center inlet and offset outlet configuration
• Overall length: 25 in.; body length: 23 in.
• Body dimensions: 11 in. diameter, 11 in. width, 5.5 in. height

Fitment Details

Fits 2010-2015 Lexus RX350, N/A. This Walker 55649 exhaust muffler assembly is a direct replacement for the listed Lexus RX350 application and supports OE-style exhaust routing.

This part cross-references 2103424782 for the same application.

Common Exhaust Issues Addressed

• Rust or corrosion in the original muffler assembly
• Exhaust noise caused by a failing muffler
• Fitment problems from a damaged or previously repaired exhaust section
• Loss of factory-style exhaust routing on the Lexus RX350
• Need for a stainless-steel replacement in place of a typical aluminized muffler

Installation Notes

Verify inlet and outlet dimensions, flange style, and overall length before installation. If the exhaust system has been welded or repaired previously, replace all required related parts so the assembly aligns correctly. Professional exhaust installation is recommended for proper sealing and fit.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless-steel construction and OE-style replacement geometry for longer service life than typical aluminized mufflers. Part number 55649 is engineered for the listed Lexus RX350 fitment and follows the Quiet-Flow SS product line approach to direct-fit exhaust replacement.