Gator Fasteners Heavy Duty Head Stud Kit – 2017-2021 Chevy/GMC 6.6L L5P Duramax Diesel (HSK66L5P)

Protect your L5P Duramax's head gaskets from the extra cylinder pressure of towing, EGR delete tunes, and bigger injectors with the Gator Fasteners Heavy Duty Head Stud Kit for 2017-2021 Chevrolet and GMC 6.6L L5P Duramax diesel trucks. Factory torque-to-yield head bolts stretch and lose clamping force over repeated heat cycles — this kit replaces them with reusable, precision-machined studs that deliver consistent, repeatable clamping load every time the heads are serviced.

• Made from HD220 high-strength material rated to 220,000 PSI tensile strength
• Rolled threads after heat treating for maximum fatigue strength and thread integrity
• Precision machined and heat treated for consistent torque values
• Complete kit includes studs, washers, and nuts for both cylinder heads
• Includes Gator Juice assembly lubricant for accurate torque readings on install
• Fits: 2017-2021 Chevrolet Silverado 2500/3500 HD and GMC Sierra 2500/3500 HD with the 6.6L L5P Duramax diesel engine

Mfg Part #: HSK66L5P. A smart upgrade for any L5P Duramax being tuned, towed hard, or built for long-term reliability.