Fuel Injector RAIL, from a 1987 Ford F-350, with 6 cylinder / 4.9L EFI engine. 4.9L EFI - FUEL RAIL. Part: FUEL Injector RAIL. Fits:4.9 L efi only!! (that are mounted from the TOP)! There are differently mounted fuel regulators, that are between the years 1987-96.