ARP 12 Point Header Studs have a 170,000 psi tensile strength with a unique nut-starter nose that helps prevent cross threading and aids installation. Choose from black oxide chrome moly or 300 series stainless steel (extra). The exhaust kit works with all OEM cast iron cylinder heads and our new aluminum cylinder head. The intake kit is intended for use with our new  aluminum cylinder head only.  

Kit includes: 11 studs, 11 washers, and 11 nuts (12 pont)