Siverado/Sierra 2500 1982-00 6.2L & 6.5L Heavy Duty Head Stud Kit Gator Fasteners intake manifold CP4 high pressure pumps are

CP4 high pressure pumps are the Achilles heel of the LML Duramax engine because of high failure rates

Each fuel injector nozzle is tested for leakage

The XD391 features a bolt-on installation by mounting the new fuel filter head in place of the factory housing

The TapShifter installs using OEM high quality connectors for a completely plug and play installation in less than 30 minutes

Each CNC machined tip is constructed from 86L20 bar stock that is triple tempered and core hardened for maximum impact and wear resistance

Siverado/Sierra 2500 1982-00 6.2L & 6.5L Heavy Duty Head Stud Kit Gator Fasteners intake manifold CP4 high pressure pumps areIf you are wanting to keep your 6. 2L or 6. 5L Chevy GMC Diesel on the road for the long haul, you need to replace your head bolts with upgraded head studs. These head studs have a much higher strength and will not stretch like the factory bolts will. This will help keep your truck from popping head gaskets. These Gator Fasteners Performance Head Studs are a Heavy Duty stud designed for stock to moderately built Duramax engines.