Gator Fasteners Head Stud Kit 17-21 GM 6.6L Duramax L5P
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This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.
Regular price
$599.99
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
Got Questions? Feel free to email us or call us at (503) 235-1947
Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
The Gator Fasteners Heavy Duty Cylinder Head Stud Kit (part number HSK66L5P) is engineered as a direct-fit upgrade for the 2017-2021 6.6L Duramax L5P diesel. Factory fasteners can stretch under high cylinder pressure; this kit restores and increases clamping load for towing, heavy hauling and performance use.
Specifications
- Rated at 220,000 psi tensile strength
- Replaces the factory head bolts to resist head lift under boost
- Chromoly 12-point nuts and washers included
- Black oxide finish
- Manufacturer part number: HSK66L5P
Vehicle fitment
- 2017 - 2021 Chevrolet Silverado 2500 HD
- 2017 - 2021 Chevrolet Silverado 3500 HD
- 2017 - 2021 GMC Sierra 2500 HD
- 2017 - 2021 GMC Sierra 3500 HD
Applications: Chevrolet Silverado 2500 HD and 3500 HD, GMC Sierra 2500 HD and 3500 HD.
Confirm fitment against your engine before ordering.
Shipping Height: 3.0
Shipping Length: 12.0
Shipping Width: 8.0