ARP has designed these extra heavy-duty oil pump driveshaft kits to provide you with the reliability you need. Made from heat-treated chromoly steel, they are larger in diameter than the OEM unit. This enables the ARP shafts to handle the added torque requirements of increased oil pump capacity or heavy-viscosity lubricants. Rated at 220,000 psi, ARP oil pump driveshafts are ready to do the job.