Walker 54511 Exhaust Muffler Assembly - Rear

Walker Quiet-Flow Muffler Assembly for Ford Focus

Walker Quiet-Flow 54511 is a direct-fit exhaust muffler assembly built for rear installation on select Ford Focus models. It combines OE-style fitment with a steel, aluminized construction and an oval body profile to support proper exhaust routing and a factory-like sound level.

For drivers searching for a rear muffler assembly for 2003-2007 Ford Focus models, this Walker Quiet-Flow muffler assembly is built around the original equipment layout. The 2-inch pipe connection inlet and outlet, offset inlet configuration, and offset outlet configuration help match the factory exhaust path on the applications listed below.

Key Features

• Direct-fit exhaust muffler assembly for rear position applications
• Walker Quiet-Flow product line focused on OE-style replacement fit and sound
• Steel muffler and body construction with aluminized finish
• Oval muffler shape with 35.125-inch overall length
• 2-inch inlet and 2-inch outlet with pipe connections
• Offset inlet and offset outlet configuration for listed Ford Focus applications
• Part number 54511 for easy catalog matching

Product Details

Walker 54511 is an exhaust muffler assembly designed for 2003-2007 Ford Focus rear applications, including 2005-2007 Ford Focus models with California Emission System and Federal Emission System configurations. The Quiet-Flow line is positioned as an OE-style replacement option with precision fit and controlled exhaust tone, making it a practical choice when replacing a worn or noisy rear muffler on a Ford Focus. This part cross-references AP Exhaust 7452 for the same application.

What This Muffler Helps Address

• Exhaust noise from a rusted, damaged, or internally failing rear muffler
• Factory exhaust fitment issues caused by an incorrect replacement part
• Corrosion concerns on an aging steel muffler assembly
• Exhaust routing problems on rear-mounted Ford Focus applications
• Loss of OE-style sound quality after muffler wear

Installation Notes and Tips

Verify the vehicle’s year, emission system, and rear exhaust configuration before ordering. This muffler assembly uses pipe connections with a 2-inch inlet and 2-inch outlet, so matching the existing exhaust pipe diameter is important for proper installation. Confirm clearance around the oval body and overall length during replacement on the Ford Focus exhaust system.

Quality Assurance

Walker Quiet-Flow muffler assemblies are built as direct-fit OE-style replacements with coverage for domestic and foreign vehicles. The product line is engineered to deliver a precision fit and consistent exhaust flow for the listed Ford Focus applications.