ARP Cylinder Head Stud Kit 150-4069

<p>Description ARP Cylinder Head Studs fits 83-87 Ford 6.9 Diesel Engines ONLY ARP cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts, and all studs come complete with hardened parallel washers for an even load distribution and accurate torque readings. With hundreds of models ready to ship, these cylinder head fasteners can be ordered for virtually any style engine. Specifications Socket Size(s) 11/16 12pt, 3/16 Allen ARP 250-4202 Key Features: Chrome moly steel 12-pt nuts & parallel-ground washers included Broached stud ends install & make cylinder head removal easier Centerless ground to assure perfect concentricity Threads rolled after heat treatment for optimum fatigue strength Ample clamping force prevents cylinder heads from lifting Rated at 220,000 psi tensile strengt</p>