Check this out! VRO pump that both works as fuel and an oil pump-maneuver by an air motor that uses a diaphragm and rectifier valves to convert crankcase pressure and vacuum pulses into motion for the pump's two chambers. What are you waiting for? Buy now! Features:  The Built-in air motor converts the pressure and vacuum pulses from the crankcase to a linear motion.  The powerful Fuel pump consists of a push-pull piston and diaphragm with a flapper and an inlet check valve. The oil pump is coupled directly to the fuel pump piston and diaphragm. Best works as a squad.   Additional features:  Manufacturer Part No: 5007420  Weight: 1.10 LBS Created device that expands energy to lift, convey, or condense fluids.  Note: Occasional inspection is vital to check cracked lines, leaks, and broken clamps. Carry out as well, checking the air motor diaphragm since when it fails, your pump won't work.Removes oxidation growth and stains and restores a lustrous appearance to bare aluminum. Use sparingly, a little bit goes a long way. Great for pontoons and aluminum boats. 18 oz. paste.This product replaces:71-09020, 8-09021, 51131090200, 051131-09020