2011-2018 Cummins 6.7L Cab & Chassis 5" Turbo Back Single No Muffler (511010)2011 2018 Cummins 6. 7L Cab & Chassis 5" Turbo Back Single No Muffler (511010) Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers horsepower you can hear!

This pan features internal heat sinks and external cooling fins

this stock-appearing unit still lights quickly and is great for daily driving

New hardware

In this case the cam literally eats its way through the block away from the force of the tappets

and a thicker rear webbing making it much less prone to fatigue and wheel burst

you will need

high numbers for easy identification

smoother engine operation

5-2016 Duramax LML 5" Downpipe Back Dual Exhaust No Muffler (531014)

040) is a factory replacement for your 2003-2007 Ford 6

Protect your investment

9L Stage 1 Injector Nozzle Set (DDP8993-1NZ)