Walker 47770 Exhaust Muffler Assembly

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 47770 is a direct-fit exhaust muffler assembly for select Nissan Frontier models. It combines stainless-steel construction with an OE-style replacement layout to help restore exhaust function while supporting longer service life than typical aluminized mufflers.

Compatible With 1999-2002 Nissan Frontier applications, this muffler assembly is built around a 2.25-inch inlet and 2.25-inch outlet with an offset inlet and offset outlet configuration. The oval body measures 21 inches long, 9 inches wide, and 7 inches high, with a 2-bolt welded flange inlet and pipe connection outlet for a factory-style exhaust connection.

Key Features

• Part number 47770 from Walker Quiet-Flow SS
• Stainless-steel muffler body and stainless-steel muffler material
• Direct-fit OE-style exhaust muffler assembly
• Oval muffler shape for factory-style packaging
• 2.25-inch inlet outside diameter and 2.25-inch outlet outside diameter
• Offset inlet and offset outlet configuration
• 2-bolt welded flange inlet with pipe connection outlet
• Built for select Nissan Frontier models from 1999-2002

Product Details

Walker Quiet-Flow SS 47770 is part of the Quiet-Flow SS product line, which focuses on stainless-steel muffler assemblies for domestic and foreign vehicles. This line is aimed at direct replacement applications where fit, corrosion resistance, and OE-style routing matter. For Nissan Frontier owners, part number 47770 provides a factory-style exhaust muffler assembly that matches the listed inlet and outlet dimensions and the offset layout used on the confirmed applications.

This part cross-references AP Exhaust 38687 and BRExhaust 287-003 for the same application.

What It Helps Address

• Exhaust noise from a worn or damaged muffler
• Rust-related deterioration in the muffler body
• Fitment issues caused by a mismatched inlet or outlet configuration
• Loss of factory-style exhaust routing on select Nissan Frontier models
• Replacement needs after corrosion or internal muffler failure

Installation Notes and Tips

Verify the inlet and outlet diameters, flange style, and offset configuration against the existing exhaust before installation. This muffler assembly is listed for 1999-2000 Nissan Frontier with California Emission System after 03/1999, 1999-2000 Nissan Frontier with Federal Emission System after 03/1999, and 2001-2002 Nissan Frontier. Confirm the vehicle’s emission setup and exhaust layout before ordering.

Fits 1999-2000 Nissan Frontier, N/A. Fits 2001-2002 Nissan Frontier, N/A.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless-steel construction for improved durability compared with typical aluminized mufflers. Part number 47770 is a direct-fit OE-style replacement for the confirmed Nissan Frontier applications listed above.