Walker 55994 Exhaust Muffler Assembly - Left

Walker Quiet-Flow Muffler Assembly

Walker Quiet-Flow 55994 is a direct-fit exhaust muffler assembly built for OE-style replacement on select vehicles. It uses an aluminized steel body with an oval muffler shape, 2.000-inch inlet and outlet diameters, and a 61.000-inch overall length for a precise exhaust system match.

Compatible with 2001-2006 Lexus LS430, left side, this Walker Quiet-Flow muffler assembly supports a factory-style exhaust repair with the fitment and dimensions needed for a clean replacement. The 55994 part number is also a useful reference when comparing OE-style exhaust muffler assembly options for the Lexus LS430.

Key Features

• Direct-fit exhaust muffler assembly for OE-style replacement
• Aluminized steel construction with premium-grade finish
• Oval muffler body for a factory-style exhaust layout
• 2.000-inch inlet and 2.000-inch outlet sizing
• Pipe connection inlet and tip-style outlet
• Designed for 2001-2006 Lexus LS430 left-side applications
• Walker part number 55994 for catalog and fitment reference

Product Details

Walker Quiet-Flow muffler assemblies are built to deliver a precision fit and OE-style sound profile in a direct replacement format. This assembly uses a steel body with an aluminized finish, an 11.000-inch body diameter, 18.375-inch body length, 11.000-inch body width, and 5.500-inch body height. The oval shape and single inlet/single outlet layout support a straightforward exhaust service on the Lexus LS430 left-side application.

Quiet-Flow is Walker’s OE-style muffler line for domestic and foreign vehicles, and this 55994 assembly follows that approach with dimensions and connection points intended to match the original exhaust configuration. If you are sourcing a Walker 55994 muffler assembly for a 2001-2006 Lexus LS430, this part provides the fitment and construction details needed for a direct replacement search.

This part cross-references Monroe Shocks & Struts (e.g., 1744050140) for the same application.

Common Exhaust Issues It Can Address

• Rust or corrosion in the original muffler assembly
• Exhaust noise from a damaged or leaking muffler body
• Poor fit after a previous exhaust repair
• Need for an OE-style replacement on a Lexus LS430 left-side exhaust path
• Mismatch in inlet or outlet sizing during muffler replacement

Installation Notes

Verify inlet and outlet diameters, body dimensions, and left-side fitment before installation. This muffler assembly uses a pipe connection inlet and a tip-style outlet, so confirm the existing exhaust routing and connection style on the vehicle. Gasket or seal is not included, so inspect related exhaust sealing components during service.

For best results, compare the original muffler location and overall length to the replacement part before installation on the 2001-2006 Lexus LS430. Walker 55994 is intended for direct-fit exhaust service, but proper alignment of hangers, pipes, and mounting points remains important for a clean installation.

Quality Assurance

Walker Quiet-Flow muffler assemblies are positioned as OE-style replacement parts with broad-market coverage for domestic and foreign vehicles. The aluminized steel construction is selected for durability in typical exhaust service, and the Quiet-Flow line is built around precision fit and factory-style sound characteristics.