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Fasteners Engine Fastener Kits

Gator Fasteners

Siverado/Sierra 2500/3500 2001-16 6.6L Heavy Duty Head Stud Kit Gator Fasteners

$688.00 $549.99 Save $138.01

SKU: G05P HSK66

In Stock
In Stock
Ships by Aug 1
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: HSK66

When it comes to keeping your 6.6L Duramax diesel engine (LB7, LLY, LBZ, LMM, LML) together under extreme stress, the Gator Fasteners Heavy Duty Head Stud Kit (HSK66) is the ultimate solution.Designed to withstand high boost, heavy towing, and extreme performance applications, this kit provides superior clamping force to eliminate head gasket failures.Whether you're running high boost, heavy towing, or aggressive tuning, the Gator Fasteners HSK66 kit is built to handle extreme conditions. Unlike factory head bolts that stretch and fail under high pressure, these heavy-duty head studs ensure maximum reliability for drag racing, sled pulling, off-road performance, and daily driving.Upgrade to Gator Fasteners Heavy Duty Head Studs and experience the difference in strength, reliability, and performance-because Nothing Bites Like Gator.Made from HD220 High-Strength Material - Engineered for extreme durability and high-performance applications.220,000 PSI Tensile Strength - Handles high cylinder pressures and extreme performance conditions.Maximum Clamping Force - Reduces the risk of head gasket failures in high-boost applications.Rolled Threads After Heat Treating - Increases strength and fatigue resistance for long-term reliability.Includes Gator Juice Assembly Lube - Ensures smooth installation and proper torque load.Precision Machined & Heat Treated - Ensures exact fitment and superior performance.Complete Installation Kit - Includes high-quality washers and nuts for a secure installation.Replaces Factory Head Bolts - Perfect upgrade for performance builds and heavy-duty applications.

Gator Fasteners Heavy Duty Head Stud Kit Chevy/GMC (2001-16) 6.6L Duramax Diesel

MIA's Description

The Gator Fasteners HSK66 is a heavy-duty head stud kit designed for 2001-2016 GM 6.6L Duramax diesel engines (LB7, LLY, LBZ, LMM, LML) to provide superior clamping force and prevent head gasket failures in high-performance applications.

Fitment

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Specifications

BrandGator Fasteners
Part NumberG05P HSK66

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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