2007.5-2009 Cummins 5.9L Cab & Chassis 5" Turbo Back Single No Muffler (511007)2007. 5 2009 Cummins 5. 9L Cab & Chassis 5" Turbo Back Single w Muffler (511008) 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!

ARP main and head studs are a must have item

Easy Installation: Use red Loctite and torque the bolt to 44 ft-lbs for a reliable hold

The PPE Bypass Valve eliminates the mechanical valve which maximizes fluid flow from the transmission cooler

This additive can help your engine reach its maximum potential by reducing power and performance robbing deposits hidden within your fuel system

Stock rod bolts can become a weak link in high-boost

the OEM springs do not have enough pressure to stop valve float

This leads to the valve opening too early which causes excessive amounts of fuel to be returned to the tank

Unloaded temperatures were consistently 10 degrees (or lower) below those measured with a factory pan

that does not mean tow but this turbo is better suited for making power rather than towing heavy loads

This procedure ensures complete heat penetration and is far superior to those lower quality studs from other manufacturers who just place the pieces in a basket

The head studs next go through a centerless grinding process to ensure that they are perfectly concentric

The Dynomite Diesel DDP305-90NZ is a fantastic choice for your Cummins if you're looking for enough fuel to handle 675RWHP+