Heavy Duty High Boost Valve Spring Set 1998.5-2018 Dodge 5.9L/6.7L Cummins XDP VGT Turbos When the CP4 pump fails

When the CP4 pump fails in your 6

they are far from it

1/8 inch NPT Temperature Port

4L Power Stroke engines

A poorly functioning or bad pump can cause a loss of power or potentially leave you on the side of the road

Heavy Duty High Boost Valve Spring Set 1998.5-2018 Dodge 5.9L/6.7L Cummins XDP VGT Turbos When the CP4 pump failsControl the valvetrain in your modified 1998. 5 2018 Dodge 5. 9L Cummins with the XDP Heavy Duty 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