Quiet a worn-out exhaust with the Walker Quiet-Flow SS Exhaust Muffler 21558, a direct-fit replacement for the 2006-2011 Chevrolet Impala and 2006-2007 Chevrolet Monte Carlo. It uses a 2.25" inlet (ID) and 2.25" outlet (OD) and bolts in without cutting, welding or specialized fabrication.
Every unit is acoustic and flow tested for consistent OE-style sound, and it's backed by Walker's limited lifetime warranty and exclusive 90-Day Safe and Sound Guarantee.
This part cross-references / interchanges with the following part numbers:
What vehicles does the Walker 21558 muffler fit?
It is a direct-fit replacement for the 2006-2011 Chevrolet Impala and 2006-2007 Chevrolet Monte Carlo. Confirm fitment for your vehicle in the Buyer's Guide tab.
What are the inlet and outlet sizes?
The muffler has a 2.25" inlet (ID) and a 2.25" outlet (OD), as stated by the manufacturer.
What is the muffler made of?
It features 100% stainless-steel construction, which delivers longer life versus aluminized mufflers, plus an internal drainage system that helps reduce moisture collection.
Does installation require welding or cutting?
No. It is a direct-fit, bolt-on replacement with OE-style pipe routings, brackets and hangers, so no specialized fabrication or welding is required.
Is the muffler warrantied?
Yes. It comes with Walker's limited lifetime warranty and the exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for 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.
