Walker 56189 Exhaust Muffler Assembly

Walker Quiet-Flow SS Muffler Assembly

Walker Quiet-Flow SS 56189 is a direct-fit exhaust muffler assembly built for OE-style replacement on select Infiniti and Nissan vehicles. It uses stainless steel construction for longer service life than typical aluminized mufflers and is shaped for a factory-style fit.

Compatible With 2004-2006 INFINITI QX56, 2005-2006 Nissan Armada, and 2004 Nissan Pathfinder Armada, this muffler assembly is built around the original exhaust layout for straightforward replacement. The Quiet-Flow SS line focuses on stainless-steel durability and direct-fit coverage for domestic and foreign applications.

Key Features

• Part number 56189
• Walker Quiet-Flow SS direct-fit muffler assembly
• Stainless steel muffler and body construction
• Oval muffler shape with OE-style replacement design
• 2.25-inch inlet outside diameter
• Offset inlet and outlet configuration
• 2-bolt welded flange connections
• Overall length: 60.75 inches
• Body dimensions: 11 inches wide, 11 inches diameter, 5.5 inches high, 21 inches long
• Outlet outside diameter: 2.5 inches

Detailed Description

Walker 56189 is an exhaust muffler assembly engineered to replace the factory muffler on select Infiniti QX56, Nissan Armada, and Nissan Pathfinder Armada models. The stainless steel body and muffler material help provide extended durability compared with standard aluminized designs, while the oval, offset layout supports OE-style routing and fitment. If you are replacing a worn or noisy factory muffler on a 2004-2006 Infiniti QX56 or a 2005-2006 Nissan Armada, this part follows the original exhaust configuration closely.

This part cross-references AP Exhaust 60001 and BRExhaust 283-759 for the same application.

Common Problems This Part Can Address

• Rust-through or corrosion in the original muffler assembly
• Exhaust noise caused by a damaged internal muffler structure
• Fitment issues from a previous non-OE-style exhaust repair
• Loss of factory exhaust routing after muffler replacement
• Need for a direct-fit stainless steel replacement on select Nissan and Infiniti SUVs

Installation Notes and Tips

Verify inlet and outlet diameters, flange style, and overall length against the existing exhaust before installation. This muffler assembly uses offset inlet and outlet positioning with 2-bolt welded flange connections, so alignment with the original exhaust path is important for proper fit. Confirm vehicle application by year, make, and model before ordering.

Quality Assurance

Walker Quiet-Flow SS muffler assemblies are built with stainless steel construction and direct-fit OE-style replacement coverage for domestic and foreign vehicles. Part number 56189 is listed for 2004-2006 INFINITI QX56, 2005-2006 Nissan Armada, and 2004 Nissan Pathfinder Armada applications.