S&S oil pumps have always been known for their uncompromising quality, but now they are also known for their beauty. All gears, springs, relief piston, check ball, plugs, fittings and shaft are compatible with OEM parts. These CNC machined billet aluminum oil pumps deliver the same oil pressure and volume as the stock 1981-later oil pumps. All pumps provide optional locations for the oil supply fitting on models with the oil tank below the transmission. The return fitting can also be used on crankcases with 1992-later style oil filter mounting. Includes instructions. Manufacturer