These valve covers are made from investment cast aluminum, with the Empi logo cast into them. The feature polished ribs and a black background. The finned design helps reduce upper cylinder head temps and there is enough clearance for most high lift rocker arms. They also feature boss that can be drilled for venting to a breather box/ The special C-Channel type gaskets and stud seals insure a positive sealing surface. Comes complete with gaskets and hardware.