Incl. 0.045" 3-7/16"/3.5" head gaskets with Fireringr Foametr (An aluminum base with a nitrile synthetic rubber foam layer on both sides with an additional single layer of silicone bead on one side) base gaskets RCM (Rubber Coated Metal) rocker cover gaskets and includes all gaskets seals and o-rings to complete a top end rebuild. OEM replacement reference 17034-66.