VP Coolant Bypass Kit 1998.5-2002 Fleece Performance booty a large S&M Diesel logo

a large S&M Diesel logo proudly showcases your dedication to quality and style

Gear Ratio Calibration via App

A clean Tranmission is a healthy

Steel Torrington Needle bearings replace plastic thrust washers

Monster Hooks offers you an easy

VP Coolant Bypass Kit 1998.5-2002 Fleece Performance booty a large S&M Diesel logoIncreased 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