Walker 55276 Exhaust Muffler Assembly

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 55276 is a direct-fit exhaust muffler assembly built for 2001-2004 Nissan Frontier and 2001-2004 Nissan Xterra applications. It combines stainless-steel construction with an OE-style replacement layout to support longer service life than typical aluminized mufflers.

For drivers searching for a replacement muffler for a 2001-2004 Nissan Frontier or 2001-2004 Nissan Xterra, this Walker Quiet-Flow SS 55276 assembly matches the original-style pipe connection design and offset inlet/outlet configuration.

Key Features

• Walker Quiet-Flow SS product line for OE-style exhaust replacement
• Stainless steel muffler material and stainless steel body for corrosion resistance
• Oval muffler shape with combination muffler design
• Direct-fit muffler assembly with pipe connection inlet and outlet
• Offset inlet and offset outlet configuration
• Overall length: 56.5 in; body dimensions: 19 in long, 9 in wide, 7 in high
• 2 in inlet inside diameter and 2 in outlet outside diameter
• Part number 55276 for catalog and fitment lookup

Product Details

The Walker Quiet-Flow SS 55276 exhaust muffler assembly is engineered as a direct replacement for select Nissan trucks and SUVs. Its stainless-steel construction helps resist exhaust-system corrosion, while the OE-style layout supports a factory-like fit on the Frontier and Xterra. The Quiet-Flow SS line focuses on broad-market stainless-steel muffler assemblies for domestic and foreign vehicles, making it a practical choice when replacing a worn or damaged muffler with a stock-style unit.

This part cross-references AP Exhaust 44845 for the same application.

Common Problems This Part Can Address

• Rust-through or corrosion in the original muffler assembly
• Exhaust leaks caused by a damaged muffler body or connection point
• Excessive exhaust noise from a failing muffler
• Loss of factory-style exhaust routing on the rear section
• Need for a direct-fit replacement on a 2001-2004 Nissan Frontier or Xterra

Installation Notes and Tips

Verify inlet and outlet orientation before installation, since this muffler uses an offset inlet and offset outlet configuration. Confirm pipe diameter and overall length against the existing exhaust system on your Nissan Frontier or Nissan Xterra before welding or clamping the assembly into place. Professional exhaust installation is recommended for proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless-steel construction and OE-style replacement fitment. The manufacturer notes limited lifetime warranty coverage for the listed Frontier and Xterra applications.