2013-2018 Cummins 6.7L 4" Downpipe Back Exhaust No Muffler (411017 / 412017) Material:Stainless

2013-2018 Cummins 6.7L 4" Downpipe Back Exhaust No Muffler (411017 / 412017) Material:Stainless2013 2018 Cummins 6. 7L 4" Downpipe Back Exhaust No Muffler (411017 412017) 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!

2010 Duramax Left & Right Bank Manifold Set (115051500)

External fins add strength and take advantage of free-flowing air

2020-2023 Duramax L5P 5" Downpipe Back Exhaust No Muffler (531017)

9L HD Main Stud Kit (MSK5924)

Not recommended for frequent or heavy towing applications with stock turbo

These upgraded up pipes eliminate the the troublesome "donut" gaskets and replace them with durable steel crush gaskets that will not blow out or leak over time

2001-2019 Duramax PPE MicroPure Extreme Performance Engine Oil Filter (114000555)

aftermarket alternators

Stock injectors: GRAPH 1

perform better while towing and experience overall increased performance

greater valve lift

ARP head studs then begin a centerless grinding process to ensure that they are perfectly concentric