1Replace Part: According to the original specifications, replacing reference OEM number is ARP 208?430 2Application: The superior head stud kit is a perfect replacement for Civic / CRX / Del Sol with OBD1 SOHC engines 1988?199 3Function: The bolts make the Gasket and cylinder head alignment snap on, and the ample clamping force prevents cylinder heads from rising. 4High Performance: All bolts are heat treated and feature laminated threads, and the openwork bolt ends install and make cylinder head easier to remove. 5Premium Materials: Manufactured by high quality iron materials with stable performance and high reliability, have a longer service life.