MagnaFlow Black DPF-Back exhaust system for 2021+ GMC Sierra 3500HD is a filter-back diesel solution featuring stainless steel construction with a satin black high-temp coating applied from tailpipe to tip. The system uses mandrel-bent tubing and a black-coated intercooled tip to deliver a finished appearance, and MagnaFlow's manufacturing process and materials are backed by a limited lifetime construction warranty and a one-year finish warranty.
MagnaFlow 21+ GMC Sierra 3500HD DPF-Back Black Filter-Back 5in Single Passenger Side Rear Exit