
- Enhanced Durability and Strength: Manufactured from ARP's proprietary 8740 chromoly steel and heat-treated to 200,000 psi tensile strength, these studs are far stronger than factory head bolts.
- Precision Engineering: The studs are cold-forged for molecular integrity and thread-rolled after heat-treat, a process that significantly boosts fatigue strength and ensures perfect thread engagement.
- Complete Kit: This professional-grade kit includes hardened parallel washers for even load distribution and hex nuts for simple installation.
- Optimized for Ford 6.9L Diesel: Specifically designed for the 1983-1987 Ford International 6.9L diesel engine, guaranteeing a perfect fit and reliable performance.

Don't risk a blown head gasket on your Ford International 6.9L diesel engine. The ARP 150-4069 head stud kit is a necessary and proven upgrade for any owner looking to enhance their engine's durability and performance. Stock head bolts are prone to stretching, especially when you increase power or put the engine under heavy load. This can lead to a loss of clamping force, causing the head gasket to fail. By replacing the bolts with ARP's superior studs, you create a more uniform and consistent clamping force, effectively locking the cylinder heads in place and preventing disastrous gasket failure. Each stud is cold-forged from a proprietary 8740 chromoly steel and heat-treated for a tensile strength of up to 200,000 psi, ensuring unparalleled strength and reliability for your vehicle.
Enhanced Durability and Strength: Manufactured from ARP's proprietary 8740 chromoly steel and heat-treated to 200,000 psi tensile strength, these studs are far stronger than factory head bolts.
Precision Engineering: The studs are cold-forged for molecular integrity and thread-rolled after heat-treat, a process that significantly boosts fatigue strength and ensures perfect th[...]
- Enhanced Durability and Strength: Manufactured from ARP's proprietary 8740 chromoly steel and heat-treated to 200,000 psi tensile strength, these studs are far stronger than factory head bolts.
- Precision Engineering: The studs are cold-forged for molecular integrity and thread-rolled after heat-treat, a process that significantly boosts fatigue strength and ensures perfect thread engagement.
- Complete Kit: This professional-grade kit includes hardened parallel washers for even load distribution and hex nuts for simple installation.
- Optimized for Ford 6.9L Diesel: Specifically designed for the 1983-1987 Ford International 6.9L diesel engine, guaranteeing a perfect fit and reliable performance.