2003-2004 Cummins 4" Turbo Back Exhaust System w / Muffler (411032 / 412032)

The 411032/412032 is a 4" turbo-back exhaust system for the 2003-2004 5.9L Cummins trucks. It will replace your restrictive OE exhaust system with a 4" mandrel-bent system with a high-flow muffler for street applications. Just like all of Mel's Manufacturings Exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you sail through the installation process. It not only sounds great but will also help improve fuel mileage, torque, and throttle response!

Part Number: 411032/412032