ARP Head Stud Kit
Premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is precisely heat-treated to 190,000 psi. ARP studs are thread rolled after heat-treat, which gives them about 2000% (that's 20 times) better than fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). All kits come complete with hardened parallel-ground washers and high quality nuts. ARP offers specially undercut studs for several engines. This procedure (done only the shorter studs) more equalizes the "stretch" of both studs, which makes for a more consistent clamping force and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!
Part Type: Cylinder Head Fasteners
UPC: 672036009847
Fastener Style: Stud
Undercut Stud: No
Head Style: Hex
Washers Included: Yes
Fastener Color: Black
Fastener Material: 8740 chromoly
Quantity Sold as: A Kit |