Walker 53402 Exhaust Muffler Assembly - Left

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS Part Number 53402 is a direct-fit exhaust muffler assembly for select Cadillac applications. It combines stainless-steel construction with an OE-style replacement layout to support longer service life than typical aluminized mufflers.

Compatible with 2000-2005 Cadillac DeVille, left, and 2006-2008 Cadillac DTS, left, this muffler assembly is built for drivers replacing a welded or worn factory unit with a direct-fit exhaust solution.

Key Features

• Walker Quiet-Flow SS product line for OE-style exhaust replacement
• Stainless steel muffler body and stainless steel muffler material
• Oval muffler shape with 11-inch body diameter
• Offset 1.875-inch inlet with pipe connection
• Dual center outlets with 3.625-inch tip outlets
• Overall length: 33.875 inches
• Direct-fit muffler assembly for select Cadillac DeVille and Cadillac DTS left-side applications

Detailed Description

Walker 53402 is an exhaust muffler assembly engineered for left-side fitment on the Cadillac DeVille and Cadillac DTS. The Quiet-Flow SS line focuses on stainless-steel construction and OE-style replacement geometry, making it a practical choice when replacing a factory muffler assembly on a welded exhaust system. The oval body measures 11 inches wide, 5.5 inches high, and 15 inches long, with an overall length of 33.875 inches for a direct-fit layout.

This part cross-references GM OE numbers 15921941 and 15921942 for the same application. Walker 53402 is also listed for Cadillac DTS and Cadillac DeVille fitment, making it a targeted replacement for owners searching for a Walker muffler assembly by vehicle and position.

Common Problems This Part Can Address

• Rust or corrosion in the original muffler assembly
• Exhaust noise caused by a damaged muffler body
• Fitment issues when replacing a welded factory muffler
• Restricted exhaust flow from a deteriorated internal muffler structure
• Need for a direct-fit replacement on Cadillac DeVille or Cadillac DTS left-side exhaust

Installation Notes and Tips

Verify inlet and outlet dimensions before installation: 1.875-inch inlet, offset inlet configuration, and dual center 3.625-inch tip outlets. This muffler uses a pipe connection inlet and is intended for left-side applications on the listed Cadillac models. If the original exhaust is a welded assembly, replace all required related parts during service to ensure proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless-steel construction and OE-style replacement fitment to support longer service life than typical aluminized mufflers. Part Number 53402 is engineered for the specified Cadillac DeVille and Cadillac DTS applications.