ARP Head Studs, engineered with precision and performance in mind, are reliable for cylinder head fastening. Cold-forged to ensure molecular integrity, these studs undergo a meticulous heat-treatment process prior to thread rolling and machining. The result is a product that meets the highest standards of strength and durability. Available with optional 12-point nuts, ARP Head Stud kits include hardened parallel washers to ensure an even load distribution and accurate torque readings. No matter the engine style, these cylinder head fasteners can be customized for virtually any application, offering a versatile solution for automotive expert and professional mechanics alike.
With a tensile strength rating of 220,000 psi, these studs provide the essential clamping force needed to prevent cylinder head lifting under the strain of heightened combustion pressures. Crafted from proprietary ARP 2000 material, the threads are rolled after heat-treatment to optimize fatigue strength, ensuring longevity and reliability in demanding conditions. The centerless ground construction guarantees perfect concentricity, facilitating the removal of the cylinder head even in tight quarters. The black oxide finish adds an extra layer of durability and aesthetic appeal. Each kit also includes heat-treated, chrome-moly steel 12-point nuts and parallel-ground washers, further enhancing the overall strength and reliability of the assembly.
ARP takes pride in using a premium grade 8740 alloy, surpassing even aircraft quality standards. The special heat treatment process, performed in a vertical fixture, ensures complete heat penetration, further enhancing the studs' structural integrity. With ARP stud kits available for a wide range of domestic and import applications, these head studs are unmatched in quality and performance, making them the top choice for those seeking the best in the market.
- Studs made of proprietary ARP 2000 material
- Ample clamping force prevents cylinder heads from lifting
- Rated at 220,000 psi tensile strength
- Hardened parallel ground washers for an even load distribution and accurate torque readings
- Heat-treated prior to thread rolling and machining for optimum fatigue strength
- Broached stud ends install & make cylinder head removal easier
- Chrome moly steel 12-pt nuts
- Comes with 0.5oz of ARP assembly lubricant.
- Part Type: Cylinder Head Fasteners
- Product Line: ARP Pro Series Cylinder Head Stud Kits
- Washers Included: Yes
- Fastener Style: Stud
- Fastener Material: 8740 chrome moly
- Fastener Finish: Black oxide
- Head Style: 12-point
- Cut to Fit: No
- Quantity: Sold as a kit.
- Socket Size(s): 14mm 12pt, 5mm Allen