These valve covers are machined in the USA from 6061-T6 aluminum. They feature #10 ORB vent ports that are baffled on each end of the valve cover along with integrated canted coil pack mounts.
They are available in wet and dry sump configuration. The wet sump configuration includes a fill cap (1" hex) on the driver side cover and an added mounting boss for the dipstick tube on the passenger side cover. The dry sump configuration is identical side to side and does not contain a fill port or dipstick mount.
They use standard factory gaskets and mounting bolts (not included).
They come plain machined. You can have them painted or powdercoated for corrosion protection.