ARP Head Stud Kit 12PT Nut For Toyota Supra 3.0L 2JZGE/GTE Inline 6cy ARP Pro Series 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 kits 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. Upgrade your Toyota Supra engine with ARP Pro Series cylinder head studs! These cold-forged studs ensure maximum strength and are heat-treated for superior durability. The 12-point nut design and hardened washers provide even load distribution and precise torque readings. Plus, with a wide selection of models available, you can find the perfect fit for your engine. Trust ARP for top-quality fasteners that will take your engine to the next level!