Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
MagnaFlow OEM-grade direct-fit catalytic converter 21-252 is a Federal/EPA-compliant replacement designed for 2011–2019 Chevrolet Silverado 2500HD and GMC Sierra 2500HD applications. Replicating the OE spun-body design with mandrel-bent tubing and corrosion-resistant stainless steel, it installs without cutting or welding, uses a single laser-fusion weld to reduce leak potential, and ships with Torca clamps and essential hardware to simplify installation.
MagnaFlow Conv Direct Fit 11-16 Chevrolet Silverado 2500HD/3500HD / GMC Sierra 2500HD/3500HD
