arp cylinder head stud, pro-series, 12-point head, for ford sb, world, man o’war iron/aluminum block w/ standard sbf/ man o’war 18 heads, kit

ARP high performance cylinder head stud kits 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. Keep your cylinders mounted securely.