Heavy Duty Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Walker Heavy Duty 21172 Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID) for Chevrolet Silverado 2500 HD
Engineered to reduce in-cab and exterior engine noise
Designed to help ensure long service life
Manufactured from aluminized steel for durability
Offered in a variety of styles, sizes and materials for your installation needs
An economical replacement for the original equipment part
Walker® offers hundreds of muffler designs and styles to fit virtually any hard-working on/off road commercial vehicle. Walker is a "one-stop" convenience, offering complete engine-to-tailpipe coverage of replacement emissions control systems and components for popular domestic, import and commercial vehicle applications.