MagnaFlow 21+ GMC Sierra 3500HD DPF-Back Black Filter-Back 5in Single Passenger Side Rear Exit Windshields>Windows Keep the check engine light

Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23946

Extended service life in methanol and ethanol

a CSF Heavy-Duty/High-Performance All-Aluminum Radiator is the obvious choice

One-piece impact extruded aluminum cylinders offer lighter weight

The OEM design

MagnaFlow 21+ GMC Sierra 3500HD DPF-Back Black Filter-Back 5in Single Passenger Side Rear Exit Windshields>Windows Keep the check engine lightThe Black DPF series is our premier MagnaFlow Performance DPF Series featuring stainless construction with the added style of a Black Coating applied from tailpipe to tip. MagnaFlow Performance Exhaust System Kit 17072 is made of durable stainless steel and built using CNC precision robotic manufacturing techniques, all backed by MagnaFlows limited lifetime construction warranty and 1 year finish warranty.