Heavy Duty High Boost Valve Spring Set 2003-2010 Ford 6.0L/6.4L Powerstroke XDP Cummins 6.7 and other fuel system plumbing

and other fuel system plumbing

This feature is great for sled pullers who do not want to shift to 4th gear on the track

These bolts are designed to provide you with proper clamping force to keep your engine from lifting the cylinder heads and blowing a head gasket

or damaged cables

Convert your LML's fuel system from a CP4 to a CP3

Heavy Duty High Boost Valve Spring Set 2003-2010 Ford 6.0L/6.4L Powerstroke XDP Cummins 6.7 and other fuel system plumbingThe XDP Heavy Duty High Boost Valve Spring Set XD388 is an essential upgrade to strengthen and gain control of the valvetrain on your 2003 2010 Ford 6. 0L 6. 4L Powerstroke. These valve springs deliver improved valve control over a factory valve spring with increased spring pressure to minimize valve float. Each spring endures a stress relief process and is computer load mapped to provide a high quality product with long term durability. Tested within