Walker 54321 Exhaust Muffler Assembly - Rear

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 54321 is a direct-fit exhaust muffler assembly for rear applications on select Ford Focus models. It combines stainless-steel construction with an OE-style replacement layout to support longer service life than typical aluminized mufflers.

Fits 2000-2004 Ford Focus, rear. This Walker muffler assembly is built for drivers looking for a replacement that follows the original exhaust routing and connection style on the Ford Focus.

Key Features

• Stainless-steel muffler and body construction
• Oval muffler shape with a combination muffler design
• Pipe connection inlet and outlet for OE-style fitment
• Offset inlet and offset outlet configuration
• Overall length: 40 inches
• Body dimensions: 9.75 inches wide, 4.25 inches high, 9 inches long
• 2-inch inlet inside diameter and 2-inch outlet outside diameter
• Direct-fit exhaust muffler assembly for rear placement

Product Details

Walker Quiet-Flow SS 54321 is part of the Quiet-Flow SS line, which focuses on stainless-steel construction and direct-fit replacement geometry for domestic and foreign vehicles. For 2000-2004 Ford Focus rear exhaust service, this muffler assembly follows the OE-style pipe connection layout and offset inlet/outlet configuration to simplify replacement of the original unit. The oval stainless-steel body is sized for a factory-style fit while supporting corrosion resistance in everyday driving conditions. This part cross-references AP Exhaust 7468 for the same application.

Common Problems This Part Can Address

• Rusted or perforated rear muffler housing
• Exhaust noise from a failing muffler assembly
• Restricted exhaust flow caused by internal deterioration
• Fitment issues from a damaged OE-style replacement muffler
• Need for a rear exhaust repair on a Ford Focus

Installation Notes and Tips

Verify the inlet and outlet configuration, overall length, and body dimensions against the original muffler before installation. This assembly uses pipe connections with an offset inlet and offset outlet, so matching the existing exhaust routing is important for proper alignment on the Ford Focus rear position. Confirm vehicle year and rear placement before ordering.

Quality Assurance

Walker positions Quiet-Flow SS as a stainless-steel OE-style replacement line for longer service life than typical aluminized mufflers. The product is listed for 2000-2004 Ford Focus rear applications and is supported by premium fitment notes in the catalog data.