Header Bolt Kit for Chevy Big Block 3/8in Dia, 0.875in UHL, Black Oxide 12-Pt Head

Header Bolt Kit for Chevy Big Block 3/8in Dia, 0.875in UHL, Black Oxide 12-Pt HeadARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12 point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the pplication. Whats more, the compact 12 point inut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut starter nose that helps prevent cross threading.

ARP manufactures a variety of special application-specific bolt and stud kits

ARP only uses premium grade 8740 alloy anda proprietary ARP2000® alloy that are rated far superior to “aircraft”quality alloy steels

self-locking nuts

Finish: Black

This prevents any unnecessary wear or damage to rotating

ARP has developed special pressure plate bolts that are applicationspecific to ensure the optimum grip length

ARP studs are thread rolled after heat-treat

Available in both High Performance and Pro Series kits

the correct preload

It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of 220

To ensure proper sealing of valve covers

Features extra heavy springs for consistent repetition