8740 chrome moly steel construction ensures maximum strength and longevity
Heat-treated to 190,000 psi tensile strength for superior load-bearing capacity
Precision J-form threads rolled after heat treatment for enhanced fastener performance
Vertical placement in special racks guarantees complete heat penetration
Compatible with 1G FE VVTI and most 1G variants for versatile application
Summarized by Shop
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-treat 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 ra