Down Pipe - 3 in Diameter - Steel - Black Ceramic - 6.6 L - GM Duramax - GM Fullsize Truck 2001-04 - Each

Exhaust System - American Thunder - Cat-Back - 3 in Diameter - Single Side Exit - 4 in Polished Tips - Steel - Aluminized - GM Fullsize Truck 2001-06 - Kit

Exhaust System - American Thunder - Cat-Back - 3 in Diameter - Dual Side Exit - 4 in Polished Tips - Steel - Aluminized - GM Fullsize SUV 2001-06 - Kit

Exhaust System - PLM Series - Down Pipe-Back - 4 in Diameter - Steel - Aluminized - 2500 / 3500 - Extended / Crew Cab - GM Duramax - GM Fullsize Truck 2001-07 - Kit

Collector Reducer - 2.5 in Inlet to 2.25 in OD Outlet - 3-Bolt Flange - O2 Sensor Bung / Gasket - Steel - Black Paint - Each

Headers - Shorty - 1.625 in Primary - Stock Collector Flange - Gaskets / Hardware Included - Stainless - Natural - Small Block Chevy - GM Fullsize SUV / Truck 2002-12 - Pair