Walker 54681 Exhaust Muffler Assembly

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 54681 is a direct-fit exhaust muffler assembly built for select Toyota 4Runner applications. It combines stainless-steel construction with an OE-style replacement layout to support longer service life than typical aluminized mufflers.

Compatible with 1999-2002 Toyota 4Runner applications, this muffler assembly uses 2.25-inch inlet and outlet connections with 2-bolt welded flanges for a factory-style exhaust connection. The oval body measures 11 inches wide, 5.5 inches high, and 21 inches long, with an overall length of 40 inches.

Key Features

• Walker Quiet-Flow SS line for OE-style exhaust replacement
• Stainless-steel muffler body and muffler material for improved corrosion resistance
• Oval combination muffler design
• 2.25-inch inlet and outlet outside diameter
• 2-bolt welded flange inlet and outlet connections
• Direct-fit layout for select Toyota 4Runner models
• Part number 54681 for application matching and catalog lookup

Product Details

Walker 54681 is an exhaust muffler assembly engineered for a direct replacement on select Toyota 4Runner vehicles. The Quiet-Flow SS product line focuses on stainless-steel construction paired with OE-style fitment, making it a practical choice for drivers replacing a worn or rusted muffler on 1999-2002 Toyota 4Runner models, including 1999-2000 vehicles with California Emission System and 2001-2002 Premium and Limited Lifetime Warranty applications. The oval stainless-steel body, offset inlet and outlet configuration, and welded flange connections support a factory-like exhaust routing and installation profile.

This part cross-references Anchor 2254 and AP Exhaust 28619 for the same application.

Common Reasons for Replacement

• Rust or corrosion in the muffler body
• Exhaust noise from a failing internal muffler structure
• Damaged or leaking flange connections
• Restricted exhaust flow from a deteriorated assembly
• Need for an OE-style replacement on a Toyota 4Runner

Installation Notes

Verify inlet and outlet diameter, flange style, and overall length before installation. This muffler assembly uses 2-bolt welded flange connections and an offset inlet/outlet configuration, so alignment with the existing exhaust system should be checked carefully during replacement. Confirm vehicle emissions configuration and model year before ordering for a 1999-2002 Toyota 4Runner.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless-steel construction and direct-fit OE-style replacement design for domestic and foreign vehicles. Part number 54681 is listed for confirmed fitment on select Toyota 4Runner applications.