2010-2012 Cummins 4" DPF Back Exhaust - No Muffler (511103)

The 511103 is a 4" DPF-Back Exhaust System by Mel's Manufacturing for the 2010-2012 6.7L Cummins. It's the perfect kit if you're looking to remove your stock components and replace it with high-performance & high-flow 4" piping from the DPF back! 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 cruise through the installation process. You'll notice an improvement in your fuel mileage, increased torque, lower EGT's, and as a bonus, you'll have a much better sounding 6.7L!

Part Number: 511103