ARP - 1/2JZ Head Stud Kit - 203-4205/203-4301
ARP head stud kit for Toyota 1JZ-GTE, 2JZ-GE & 2JZ-GTE. These JZ Headstuds have the option for CA625+(this is the strongest material choice and has a typical tensile strength of 260,000-280,000 psi)
Toyota 1JZGTE, 2JZGE and 2JZGTE engines (Also suits Toyota 1FZ engines)
Arp are the leading brand in fastener technology. All fasteners are made with the highest quality materials with quality assurance testing.
This ARP head stud kit uses premium grade 8740 chrome molly. Each stud is placed vertically into special racks and precisely heat-treated to 190,000 psi. This procedure ensures complete heat penetration and the results are far superior.
CA625+®: This super-alloy demonstrates superior fatigue 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+. Typical tensile strength is 260,000-280,000 psi.
8740: 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, only if the threads are rolled after heat-treatment, as is ARP’s standard procedure. Chrome moly can be heat-treated to deliver tensile strengths between 180,000 and 200,000 psi.