When cylinder pressure climbs from tuning, upgraded turbos, heavy towing, or performance builds, factory torque-to-yield head bolts simply aren’t enough. The SWAG Performance HD Cylinder Head Stud Kit (6.7HDSK) is engineered to deliver the clamping strength and reliability that diesel technicians, performance shops, and serious DIY builders demand.
Built from premium high-strength alloy and tested to 220,000+ PSI tensile strength, these heavy-duty head studs provide significantly greater clamping force and resistance to stretch than many traditional 8740 chromoly fasteners. This added strength helps keep cylinder heads securely sealed under high boost and extreme combustion pressure—critical for preventing head gasket failure in modified or heavily worked Powerstroke engines.
Whether you’re installing head gaskets during a rebuild or preparing a 6.7 Powerstroke for higher boost levels, the SWAG Performance head stud kit offers the durability and precision needed to keep your engine sealed and reliable.
This kit delivers professional-grade performance at a price point that makes sense for builders and shops alike.
Key Features
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220,000+ PSI tensile strength for superior clamping force
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Heavy-duty alloy construction engineered for high-boost diesel engines
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Helps prevent head gasket failure under high cylinder pressure
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Precision threads for accurate torque and consistent preload
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Ideal for stock rebuilds, tuned trucks, and high-performance builds
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Trusted solution for diesel performance shops, installers, and DIY engine builders
What’s Included
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(20) Heavy-Duty Cylinder Head Studs
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(20) Hardened Washers
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(20) High-Strength Nuts
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Installation Hardware
Why Upgrade to Head Studs?
Cylinder head studs provide more accurate torque loading and better clamping force compared to standard bolts, which helps maintain head gasket sealing under extreme combustion pressure. Performance builds that increase boost or horsepower place greater stress on head fasteners, making upgraded studs a critical reliability upgrade.
Perfect For
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Head gasket replacement
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High boost / tuned trucks
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Performance builds
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Heavy towing applications
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Diesel repair shops and engine builders
Cross-Reference / Search Keywords
Why Builders Choose SWAG Performance
SWAG Performance develops diesel performance parts with a focus on durability, real-world performance, and installer confidence. Each component is designed to meet the demands of modern high-boost diesel engines while providing a reliable solution for both professional installers and weekend builders.
