Walker 21411 Exhaust Muffler

Walker Quiet-Flow SS Muffler for Buick Rendezvous

Walker Quiet-Flow SS muffler Part Number 21411 is a direct-fit exhaust muffler built for specific vehicle applications, including 2002-2007 Buick Rendezvous models. It uses 100% stainless-steel construction for the body and is engineered for precise fitment, steady exhaust flow, and OE-style sound control.

Key Features

• Specific-fit exhaust muffler for selected domestic and import vehicles
• 100% stainless-steel body construction for corrosion resistance
• Oval muffler shape with a combination muffler design
• 2.25-inch inlet and 2.25-inch outlet inside diameter
• Center inlet and offset outlet configuration
• 2-bolt welded flange inlet with pipe connection outlet
• Overall length: 37.63 inches; body length: 27 inches; body width: 11 inches; body height: 5.5 inches
• Aluminized finish

Product Details

The Walker Quiet-Flow SS line is built around stainless-steel construction and OE-style exhaust tuning. This muffler is designed to maintain a factory-like sound profile while supporting smooth exhaust flow through a precision-fit layout. Part Number 21411 is a practical choice for drivers replacing a worn or noisy muffler on a Buick Rendezvous, especially when the goal is to restore original exhaust character without changing the vehicle’s basic exhaust routing.

This part cross-references AP Exhaust 18162 and interchange 2117 for the same application.

Common Problems This Muffler Can Address

• Exhaust noise from a damaged or rusted muffler
• Reduced exhaust flow caused by internal muffler deterioration
• Fitment issues when replacing a factory-style muffler on a Buick Rendezvous
• Corrosion-related failure in the exhaust system
• Loss of OE-style exhaust tone after muffler wear

Installation Notes and Tips

Fits 2002-2007 Buick Rendezvous, N/A. Verify inlet and outlet orientation before installation, since this muffler uses a center inlet and offset outlet layout. The inlet is a 2-bolt welded flange, and the outlet is a pipe connection, so matching the existing exhaust configuration is important for proper installation. If the original assembly was welded, inspect the surrounding exhaust components and replace all required parts as needed.

Quality Assurance

Walker Quiet-Flow SS mufflers are part of a stainless-steel product line developed for precise fitment, controlled sound, and consistent exhaust flow. Part Number 21411 is built for specific applications and is backed by a Limited Lifetime Warranty on the listed Buick Rendezvous fitment.