Walker 21640 Exhaust Muffler

Walker Quiet-Flow SS Muffler for Jeep Grand Cherokee

Walker Quiet-Flow SS Part Number 21640 is a specific-fit exhaust muffler built for 2002-2004 Jeep Grand Cherokee applications. It uses stainless-steel construction for the body, a center 2.5-inch inlet, and an offset 2.25-inch outlet to match the listed exhaust configuration while maintaining OE-style sound characteristics.

Key Features

• Specific-fit exhaust muffler for 2002-2004 Jeep Grand Cherokee
• Walker Quiet-Flow SS product line with precision fit and OE-style sound
• 100% stainless-steel body construction for corrosion resistance
• Oval muffler body with 30-inch overall length
• Center inlet and offset outlet layout for the listed application
• 2.5-inch inlet inside diameter and 2.25-inch outlet inside diameter
• Walker Part Number 21640 for direct catalog lookup

Detailed Description

Walker Quiet-Flow SS is the brand’s stainless-steel muffler line for drivers who need a direct-fit exhaust replacement with controlled sound and consistent flow. This muffler is built with a stainless-steel body and an aluminized finish, and its oval combination design is sized for the specified Jeep Grand Cherokee exhaust layout. For shoppers searching for a Jeep Grand Cherokee muffler replacement, Walker 21640 provides a cataloged fit for 2002, 2003, and 2004 models.

This part cross-references 2472 for the same application. Walker 21640 is listed for 2002-2004 Jeep Grand Cherokee, N/A, and the fitment notes specify Premium and Limited Lifetime Warranty coverage along with a required 55593 component when applicable to the assembly.

Common Problems This Part Can Address

• Exhaust noise from a worn or rusted muffler
• Restricted exhaust flow caused by internal deterioration
• Corrosion-related failure in the original muffler body
• Fitment issues when replacing the factory muffler on a Jeep Grand Cherokee
• Loss of OE-style exhaust tone after muffler damage

Installation Notes and Tips

Verify the center inlet and offset outlet orientation before installation, since this muffler is not reversible or tunable. The listed application for 2002-2004 Jeep Grand Cherokee requires 55593, and if the exhaust is a welded assembly, replace all required parts to complete the repair correctly. Confirm pipe diameters and overall length against the vehicle’s existing exhaust layout before final installation.

Quality Assurance

Walker Quiet-Flow SS mufflers are positioned as stainless-steel replacement parts with precision fit and OE-style sound for domestic and import vehicles. For this application, the fitment notes list Premium and Limited Lifetime Warranty coverage.