Walker 21464 Exhaust Muffler

Walker Heavy Duty 21464 Exhaust Muffler

Walker Heavy Duty 21464 is a specific-fit exhaust muffler built for select Ram and Dodge Ram heavy-duty applications. It uses an absorption-style, round steel body with an aluminized finish for a direct replacement focused on exhaust flow and fitment.

Key Features

• Absorption muffler design for controlled exhaust sound
• Specific fit for select 2007-2012 Ram heavy-duty trucks
• Round body construction with 7-inch body width and 7-inch body height
• Steel body with aluminized finish for corrosion resistance
• Center inlet and center outlet pipe connection layout
• 4-inch inlet and 4-inch outlet inside diameter
• Reversible design for installation flexibility
• Overall length: 20 inches; body length: 12 inches

Product Details

Walker Heavy Duty 21464 is part of Walker’s Heavy Duty line, which focuses on replacement exhaust components for hard-working on-road and off-road commercial vehicles. Walker offers broad engine-to-tailpipe coverage across emissions and exhaust replacement needs, and this muffler follows that approach with a direct-fit configuration for the listed Ram and Dodge Ram applications. If you are replacing a worn muffler on a Ram 2500 or Ram 3500, part number 21464 provides the correct 4-inch center-in, center-out layout for the specified heavy-duty exhaust system.

This part cross-references Monroe Shocks & Struts (e.g., M-144, M090362) for the same application.

Vehicle Fitment

• Fits 2011-2012 Ram 2500, N/A. Notes: Aftermarket Design; All Parts Must Be Replaced Together; Heavy Duty.
• Fits 2011-2012 Ram 3500, N/A. Notes: Aftermarket Design; All Parts Must Be Replaced Together; Heavy Duty.
• Fits 2007-2010 Dodge Ram 2500, N/A. Notes: Aftermarket Design; All Parts Must Be Replaced Together; Heavy Duty.
• Fits 2007-2010 Dodge Ram 3500, N/A. Notes: Aftermarket Design; All Parts Must Be Replaced Together; Heavy Duty.

Common Uses

• Replacing a rusted or damaged muffler on a Ram 2500 or Ram 3500
• Restoring exhaust sound control after muffler failure
• Addressing exhaust leaks caused by corrosion or body damage
• Matching the factory-style 4-inch center inlet and outlet layout on heavy-duty trucks
• Supporting a direct replacement on listed Dodge Ram and Ram applications

Installation Notes

Verify the vehicle year, make, model, and heavy-duty exhaust configuration before installation. This muffler uses pipe connections with a center inlet and center outlet, so confirm the existing system matches the 4-inch inlet and 4-inch outlet dimensions. The part is reversible, which can help with orientation during installation, but the listed fitment notes indicate that all parts must be replaced together on the specified aftermarket design applications.

Quality Assurance

Walker is known for replacement exhaust components that cover a wide range of domestic, import, and commercial vehicle applications. Part number 21464 is built as a specific-fit muffler for the listed Ram and Dodge Ram heavy-duty trucks, using steel construction and an aluminized finish for service in demanding exhaust environments.