Heavy Duty High Boost Valve Spring Set 1998.5-2018 Dodge 5.9L/6.7L Cummins XDP Late Cummins 5.9 Shop at Holders Diesel for

Shop at Holders Diesel for your New KC300x Gen 3 Stage 3 Turbo E99

They feature a 7/16 diameter and are built from only the highest quality seamless 4130/4135 chromoly tubing that is cold drawn over a mandrel to increase rigidity and reduce flex

3 Powerstroke engine's performance with the KC300x Stage 2 63/73 Gen 2 Turbo

Note: If used in a dual alternator application

the integrated mounts points have been upgraded

Heavy Duty High Boost Valve Spring Set 1998.5-2018 Dodge 5.9L/6.7L Cummins XDP Late Cummins 5.9 Shop at Holders Diesel forControl 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