Cummins Coolant Bypass Kit 2006-2007 Auto Trans Fleece Performance HAT We recommend using GM 12637788

We recommend using GM 12637788 head gasket (Grade C

Part Number: 1045292

All Mega-Flo S-2 6

it's a way for your little ones to embrace the diesel lifestyle and make a statement

105-Pound Valve Springs - Enhances valve control to support higher boost and RPM

Cummins Coolant Bypass Kit 2006-2007 Auto Trans Fleece Performance HAT We recommend using GM 12637788Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5. 9 6. 7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary