Description Heavy Duty Head Stud Kit for 2001 – 2016 6.6L GM & Chevrolet Duramax Gator Fasteners # HSK66 Features: Black Oxide Finish Chromoly steel 12 point nuts 220,000 PSI Tensile Strength The Gator Fasteners Head Stud Kit is a must have in any high performance 2001-2016 GM 6.6L Duramax. To overcome head gasket failures that can occur in diesel engines in these high performance applications, Gator Fasteners has introduced heavy-duty head studs for the popular 6.6L LB7, LLY, LBZ, LMM and LML Duramax diesels. These studs are rated at 220,000 psi tensile strength, and provide the clamping force required to keep cylinder heads from lifting due to higher combustion pressures.
