Walker 21355 Exhaust Muffler

Walker Quiet-Flow SS Muffler for Ford and Lincoln

Walker Quiet-Flow SS muffler Part Number 21355 is a specific-fit exhaust muffler built with 100% stainless-steel construction for corrosion resistance and long-term service. It is engineered for OE-style sound, precise fitment, and steady exhaust flow on select Ford Expedition and Lincoln Navigator applications.

Quiet-Flow SS Product Line

The Quiet-Flow SS line is Walker’s stainless-steel muffler family for domestic and import vehicles. This series focuses on direct-fit replacement geometry, controlled exhaust tone, and flow characteristics that match factory-style drivability.

Key Features

• Specific-fit exhaust muffler for select applications
• 100% stainless-steel body construction
• Oval muffler shape with aluminized finish
• 2.5 in. inlet and 2.5 in. outlet pipe connections
• Offset inlet and offset outlet configuration
• Combination muffler design for OE-style exhaust sound
• Walker Quiet-Flow SS Part Number 21355

Detailed Description

Walker 21355 is an exhaust muffler designed for 1999-2002 Ford Expedition and 1999-2002 Lincoln Navigator applications. The oval body measures 24 in. long, 9 in. wide, and 7 in. high, with an overall length of 28 in. and a 1.625 in. inlet offset. Its 2.5 in. pipe connection sizing supports direct replacement use where the original exhaust layout calls for an offset inlet and outlet arrangement. This part cross-references Anchor (e.g., 2293) for the same application.

Common Exhaust Issues It Can Address

• Excessive exhaust noise from a worn muffler
• Rust-related muffler deterioration
• Restricted exhaust flow from internal damage
• Factory exhaust tone that no longer matches OE sound levels
• Fitment problems when replacing a direct-fit muffler on Ford Expedition or Lincoln Navigator

Installation Notes and Tips

Compatible With 1999-2002 Ford Expedition, N/A, and 1999-2002 Lincoln Navigator, N/A. Verify inlet and outlet orientation, body dimensions, and pipe diameter before installation to confirm alignment with the existing exhaust system. If the vehicle uses a welded assembly, replace all required related parts during service to maintain proper exhaust fit and sealing. Walker 21355 is not reversible and is not tunable.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with stainless-steel construction and are positioned as OE-style replacement parts for select domestic and import vehicles. Part Number 21355 is part of Walker’s Quiet-Flow SS line, which emphasizes precision fit and controlled exhaust sound for factory-style replacement service.