ARP main stud kit for Toyota 1UZ.
Arp are the leading brand in fastener technology. All fasteners are made with the highest quality materials with quality assurance testing.
The studs are manufactured from 8740 chrome moly steel, heat-treated at ARP to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treating to create a fastener that has threads 2000% stronger than others.
8740: 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.