Walker 21677 Exhaust Muffler - Right

Walker Quiet-Flow SS Muffler for Honda Pilot

Walker Quiet-Flow SS muffler Part Number 21677 is a specific-fit exhaust muffler for select Honda Pilot applications. It uses 100% stainless-steel construction for the body and is built for precision fit, steady exhaust flow, and OE-style sound control.

Compatible with 2009-2015 Honda Pilot, right side, this Quiet-Flow SS muffler is a direct-fit replacement for the listed application. The oval body, offset inlet and outlet layout, and pipe-connection inlet help match the original exhaust routing on the vehicle.

Key Features

• Walker Quiet-Flow SS line for OE-style exhaust sound and fit
• 100% stainless-steel body construction
• Specific-fit design for the listed Honda Pilot application
• Oval muffler body with offset inlet and outlet configuration
• 1.75-inch inlet inside diameter
• 2.25-inch outlet outside diameter with tip outlet type
• Aluminized finish
• Part Number 21677 for catalog and fitment reference

Product Details

Walker Quiet-Flow SS mufflers are positioned as a broad-market stainless-steel exhaust solution for domestic and import vehicles. This model, Part Number 21677, is built with a stainless-steel body and a reflection-style muffler design to support controlled exhaust tone and consistent flow. The oval housing measures 27.75 inches overall, with a 14-inch body length, 11-inch body width, and 5.5-inch body height. The inlet uses a 1.75-inch pipe connection with a 3.75-inch offset, while the outlet is a 2.25-inch tip with an offset configuration.

This part cross-references Four Seasons 54840 for the same application. It is also associated with interchange references 280-193 and TYC 30030.

Common Issues It Can Address

• Exhaust noise from a worn or damaged muffler
• Corrosion-related muffler failure on the original exhaust system
• Poor exhaust tone control after the factory muffler deteriorates
• Fitment problems when replacing a right-side Honda Pilot muffler
• Restricted exhaust flow caused by internal muffler damage

Installation Notes

Fits 2009-2015 Honda Pilot, right. Verify inlet and outlet orientation, offset measurements, and pipe diameter before installation. If the original assembly is welded, replace all required related exhaust parts during service to maintain proper alignment and sealing. Confirm the vehicle’s exhaust routing matches the listed specific-fit configuration before final installation.

Quality Assurance

Walker Quiet-Flow SS is built with stainless-steel construction and OE-style sound characteristics for the listed application. The manufacturer notes premium fitment for this Honda Pilot application and identifies a limited lifetime warranty for the referenced vehicle coverage.