Gator Fasteners HSK66L5P Siverado/Sierra 2500/3500 2017-21 6.6L & L5P Heavy Duty Head Stud Kit CORE-400 Every unit is factory tested

Every unit is factory tested and never requires calibration

0L at 600 CFM

Other benefits of properly venting the crankcase are reduced internal engine pressures which will decrease the chance of seal damage and oil misting

To determine if catalytic converter is present

Fits 12-15 Toyota Tacoma 4

Gator Fasteners HSK66L5P Siverado/Sierra 2500/3500 2017-21 6.6L & L5P Heavy Duty Head Stud Kit CORE-400 Every unit is factory testedIf you are wanting to keep your LP5 6. 6L Duramax 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. Details: L5P Diesel 2017 2021