HD High Boost Valve Spring Set 1998.5-2022 Dodge 5.9L/6.7L Cummins XDP XDP fuel injectors are remanufactured

XDP fuel injectors are remanufactured with only the highest quality materials and are designed to provide you with a long service life

The XDP's Xtra Cool Radiators are built with techniques used in the semi-truck and HD industry

6L Duramax LML back on the road

Backed By XDP's 1-Year Warranty

HD High Boost Valve Spring Set 1998.5-2022 Dodge 5.9L/6.7L Cummins XDP XDP fuel injectors are remanufacturedControl 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