ARP Head Stud Kit for B16A/B17/B18C5 motors are made using a premium grade 8740 alloy that is rated far superior to "aircraft" quality. The studs have a whopping 190,000 psi tensile strength, and are precision centerless-ground and thread-rolled to Mil-S-8879 specs. Their black oxide finish protects them from wear and corrosion, and ARP throws in hardened parallel washers for uniform load distribution and accurate torque readings.

Every ARP bolt and fastener provides optimum cylinder head-to-block sealing which is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers.