Our latest and most recent design. A significant amount of hours went into this new design. By far this is the nicest looking Oldsmobile Aluminum valve cover. Features an incredibly thick cnc billet rail. Each and every cover is precision welded. Manufactured right here in the USA. The thick billet rail provides for a perfect seal. Sold as a pair. Will clear just about every roller rocker and shaft rocker available on the market. Features a life time warranty against defects or craftsmanship.