Walker 21482 Exhaust Muffler

Walker Quiet-Flow SS Muffler 21482

Walker Quiet-Flow SS 21482 is a specific-fit exhaust muffler built with 100% stainless-steel body construction for corrosion resistance and long-term service. It is shaped as an oval combination muffler with a 3-bolt welded flange inlet and a 2.75-inch pipe connection outlet for select Chevrolet Express and GMC Savana applications.

The Quiet-Flow SS line focuses on precision fit, steady exhaust flow, and OE-style sound control. For buyers searching for a replacement muffler for a 1996-2002 Chevrolet Express or GMC Savana, part number 21482 provides a direct-fit option for the listed vehicles and configurations.

Key Features

• Specific-fit exhaust muffler for listed Chevrolet and GMC vans
• 100% stainless-steel body construction
• Oval muffler shape with combination design
• 1 inlet and 1 outlet
• 3-bolt welded flange inlet with offset configuration
• 2.75-inch outlet pipe connection
• Quiet-Flow SS product line for OE-style exhaust sound
• Walker part number 21482

Detailed Description

Walker Quiet-Flow SS 21482 is engineered for select full-size vans, including 1996-1999 Chevrolet Express 1500, 1996-1999 Chevrolet Express 2500, 1998-2002 Chevrolet Express 3500, 1996-1999 GMC Savana 1500, 1996-1999 GMC Savana 2500, and 1998-2002 GMC Savana 3500. Fitment varies by gross vehicle weight rating and exhaust configuration, so the vehicle notes should be checked before ordering. This muffler uses an offset inlet and offset outlet layout with a 3-bolt welded flange inlet and a 2.75-inch outlet diameter.

The Quiet-Flow SS product line is Walker’s stainless-steel muffler family for drivers who want a direct replacement with controlled exhaust tone and consistent flow characteristics. This part cross-references CSF 2456 for the same application. Walker 21482 is a practical choice for restoring exhaust function on Chevrolet Express and GMC Savana models while maintaining an OE-style sound profile.

What It Helps Fix

• Rust-through or corrosion in the original muffler body
• Exhaust noise from a damaged or leaking muffler
• Restricted exhaust flow caused by internal muffler deterioration
• Fitment issues when replacing a welded or flange-style factory muffler
• Loss of factory-like exhaust tone on listed van applications

Installation Notes

Confirm the vehicle’s year, model, GVW rating, and exhaust layout before installation. This muffler uses a specific-fit configuration, so the inlet flange style, offset dimensions, and outlet diameter must match the existing system. If the original assembly is welded, replace all required related parts as noted in the fitment data. Professional exhaust installation is recommended for proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with stainless-steel construction and are positioned by the manufacturer as a precision-fit, OE-style replacement line for domestic and import vehicles. Part number 21482 is part of that stainless-steel muffler family and is backed by the fitment and application details listed for the specified Chevrolet Express and GMC Savana models.