HD High Boost Valve Spring Set 1998.5-2022 Dodge 5.9L/6.7L Cummins XDP oil cooler

oil cooler

6L Duramax LML back on the road

Secures The Intake Side Of Cylinder Head

eliminates belt chirp

HD High Boost Valve Spring Set 1998.5-2022 Dodge 5.9L/6.7L Cummins XDP oil coolerControl the valvetrain in your modified 1998. 5 2022 Dodge 5. 9L Cummins with the XDP HD High Boost Valve Spring Set XD390. The XD390 Valve Spring Kit is designed to help eliminate valve float due to elevated cylinder pressures and higher boost levels. Common upgrades like aftermarket tuning and fueling and turbo upgrades can cause valve float that results in severe engine damage. Intake valves can also be blown open from added boost levels and