ARP CA625+ Head Studs – Toyota Supra Lexus IS300 GS300 SC300 2JZ 2JZGE 2JZGTE. ARP’s CA625 Plus material is newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all, it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 270,000 psi. These fasteners deliver a 50% increase in tensile strength over the OEM Torque to Yield (TTY) Head Bolts. Because of the many head lifting issues on many engine blocks running in excess of 35+ PSI, a stronger stud needed to be manufactured to meet the demands of today’s top engine builders and racers alike. No modification to your cylinder head or block is required as these are a direct drop-in replacement for the OEM head bolts! Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That’s why ARP head studs are popular among leading Sport Compact/Import racers. Prevent blown head gaskets and ensure optimum sealing! The kit comes with studs, washers, and nuts – a great upgrade for high powered motors! 2JZ / 2JZ-GE / 2JZ-GTE. OE Spec or Performance/Custom. We accept all major credit cards. Point One Main Studs for Chevy Gen III IV LS1 LS2 LS3 5.3L 5.7L 6.0L 6.2L. Point One Cylinder Head Studs for 2004+ Chevy Gen III IV LS2 LS3 5.3L 6.0L 6.2L. Complete Cylinder Head Bolts Set for Ford Modular 4.6L 5.4L 281 330 SOHC DOHC. HB194 HEAD BOLTS SET for FORD TAURUS 3.0L 183 VULCAN 2 SETS REQ FOR BOTH HEADS.