Walker 53645 Exhaust Muffler Assembly - Rear Left

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 53645 is a direct-fit exhaust muffler assembly built for the rear left position on select Acura MDX models. It combines stainless-steel construction with an OE-style replacement layout to support longer service life than typical aluminized mufflers.

Compatible with 2004-2006 Acura MDX rear left applications, this muffler assembly is shaped as an oval combination muffler with an offset inlet and offset outlet tip. The 1.75-inch inlet uses a 2-bolt welded flange for a factory-style connection, while the 27.5-inch overall length and 9-inch body diameter help match the original exhaust layout.

Key Features

• Direct-fit exhaust muffler assembly for select Acura MDX rear left applications
• Stainless-steel muffler and body construction for improved corrosion resistance
• Oval combination muffler design
• Offset inlet and offset outlet configuration
• 1.75-inch inlet outside diameter with 2-bolt welded flange connection
• Outlet tip style with 5.875-inch outlet outside diameter
• Walker Quiet-Flow SS product line for OE-style exhaust replacement
• Part number 53645 for application matching and catalog lookup

Detailed Description

Walker Quiet-Flow SS 53645 is engineered as a replacement exhaust muffler assembly for 2004-2006 Acura MDX rear left fitment. The stainless-steel construction is used for both the muffler and body, while the aluminized finish reflects the product’s OE-style replacement format. With an oval shape, 15-inch body length, 7-inch body height, and 9-inch body width, this assembly is built to follow the original exhaust packaging closely. The Quiet-Flow SS line focuses on stainless-steel durability and direct-fit replacement geometry for domestic and foreign vehicles, and this part number is listed for the Acura MDX application. This part cross-references BRExhaust 163-041 for the same application.

Common Issues This Part Can Address

• Rust or corrosion in the rear left muffler assembly
• Exhaust noise caused by a damaged or leaking muffler
• Fitment problems from a worn OE-style replacement part
• Restricted exhaust flow from internal muffler deterioration
• Need for a direct-fit replacement on 2004-2006 Acura MDX rear left applications

Installation Notes and Tips

Fits 2004-2006 Acura MDX, rear left. Verify inlet diameter, flange style, and overall length against the original exhaust assembly before installation. If the welded assembly requires additional service parts, replace all required components during the repair to maintain proper alignment and sealing. Confirm the outlet tip orientation and offset configuration match the vehicle’s original routing.

Quality Assurance

Walker Quiet-Flow SS 53645 is part of Walker’s stainless-steel OE-style replacement line, built to provide longer service life than typical aluminized mufflers. It is listed for domestic and foreign vehicle applications and is engineered for direct-fit replacement on the specified Acura MDX fitment.