2020-2022 Duramax L5P 4" Downpipe Back Exhaust w/ Muffler (431027) 6.7L

2020-2022 Duramax L5P 4" Downpipe Back Exhaust w/ Muffler (431027) 6.7L2020 2022 Duramax L5P 4" Downpipe Back Exhaust w Muffler (431027) 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! IMPORTANT NOTE: These kits will

replaces stock or a shimmed pressure relief valve

BD Diesel Performance has you covered should the worst happen with our Positive Air Shut-Off (PAS) by cutting the intake air supply to the cylinders and safely shutting down the engine

Driven BR will be changing to Driven BR50 in 2024

For racing applications this kit provides fuel flow to maintain fuel pressure to 26

Compound turbochargers from the factory

188/220 Camshaft (fits 89-2018 Cummins)

Biggest injector recommended for stock CP3 pump

Kit includes hole saw

more stable valvetrain operation

For a high-performance build

and installation techniques

we used a 2013 2500 Cummins-powered Ram towing a 13