2001-2007 Duramax 4" Downpipe Back Exhaust w/ Muffler (431107 / 432107)2001 2007 Duramax 4" Downpipe Back Exhaust w Muffler (431107 432107) 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!

PPE’s Billet Hardened Stainless Steel 14mm (M14-1

Durable Construction: Crafted from high-quality materials for repeat usage and long service life

A new Garrett turbocharger is a superior product versus independently remanufactured units

and North American standards

Because vehicles and performance levels are as different as the people who drive them

AB T5V 1A9

you have the best cam combo on the market for the 1989-1998  dodge Cummins

and variable geometry nozzle assembly this turbo has the ability to move 30% more air through it than stock

This Clean Custom series injector set is intended for vehicles requiring 950 RWHP and above

Versatile Compatibility: Works with both OEM (stock) valve springs and most aftermarket performance springs

which creates a longer service life

Mahle is built from the highest quality materials and is always a direct replacement that meets or exceeds OE specifications