Moroso 62220 Oil Pump Primer for Ford

This Moroso oil pump primer fits Ford 351W,351C,400,429,460 engines Pump drive end of the primer fits 5/16 hex male end of the oil pump driveThe only correct way to build up oil pressure in a new engine before initial starting.Remove the distributor and insert the primer to engage the end of the oil pump drive.The other end of the primer fits a 3/8 chuck in a hand drill to drive the oil pump.Black oxide finish resists corrosion.