2001-2010 GM 6.6L w/ Allison Transmission Duramax Valve Body Recalibration Kit 2009-2010-gmc-sierra-1500-4-8l-v8-gas-esi8229558 The PPE lower intake manifolds

The PPE lower intake manifolds are cast from A356

This coolant pipe is custom fabricated with a heavy-duty flange

The end result is cooler oil supply to vital engine components allowing for less wear on injectors

Designed for factory fit

2001-2010 GM 6.6L w/ Allison Transmission Duramax Valve Body Recalibration Kit 2009-2010-gmc-sierra-1500-4-8l-v8-gas-esi8229558 The PPE lower intake manifoldsEven the venerable Allison transmission can use some well placed improvements; that is why PPE has designed the Allison Valve Body Recalibration Kit (VBR kit). The VBR kit is perfect for those individual who really punish their vehicles in activities such as towing, racing or extreme work. This kit corrects and reduces the Allison from going into neutral under a load. It also prevents 3rd to 4th gear slips, C2 or C3 clutch burning, and the tendency of