Made from investment cast aluminum, with cast in EMPI logo and polished ribs on a black background. The finned design helps reduce upper cylinder head temperature and there is enough clearance for most high lift rocker arms. It also has a boss that can be drilled for venting to a breather box. The special C-Channel-Type gaskets and stud seals insure positive sealing. Installation on 67 and prior Bugs may require trimming of the body for clearance. Complete with all gaskets and hardware.