ARP Oil Pump Primer Kit consists of components that are designed to spin the oil pump with a drill motor and bring up the oil pressure prior to starting the engine. It features a special billet aluminum sleeve that accurately positions the shaft and keeps it from wobbling. This oil pump primer kit prevents unnecessary wear and damage to rotating, reciprocating as well as valve train component. It is rated at 170,000 psi to ensure extended service life and is corrosion resistant.