Quiet exhaust drone with the WALKER EXHAUST muffler — the Quiet-Flow SS 21553, a direct-fit replacement that bolts in on the 2003-2006 Chevrolet Express 2500 3/4 Ton and GMC Savana 2500 3/4 Ton, plus the 2003-2009 Chevrolet Express 3500 1 Ton and GMC Savana 3500 1 Ton, delivering OE-style sound.
This oval-body muffler uses a 2.625" (ID) inlet and 2.625" (ID) outlet, both offset pipe connections, and its flow and acoustics are validated through acoustic and flow testing. Made in the United States and backed by Walker's limited lifetime warranty plus the exclusive 90-Day Safe & Sound Guarantee.
Interchange: 15102931 · 15102935
This part cross-references / interchanges with the following part numbers:
Which vehicles does the WALKER EXHAUST 21553 muffler fit?
It's a direct-fit replacement for the 2003-2006 Chevrolet Express 2500 3/4 Ton and GMC Savana 2500 3/4 Ton, plus the 2003-2009 Chevrolet Express 3500 1 Ton and GMC Savana 3500 1 Ton.
What is the 21553 muffler made of?
It features 100% stainless-steel construction, which Walker states delivers longer life than aluminized mufflers, along with an internal drainage system that helps reduce moisture collection.
Does installing this muffler require welding?
No. It's a direct-fit, bolt-on replacement that includes factory-style pipe routings, brackets and hangers, so no specialized fabrication or welding is needed.
What are the inlet and outlet dimensions?
Both the inlet and outlet are 2.625" inside diameter pipe connections, and both are in an offset location on the oval body.
What warranty covers this Walker muffler?
It comes with Walker's limited lifetime warranty and the exclusive 90-Day Safe & Sound Guarantee. Visit Walkerexhaust.com for full details.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
