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