Pump 4 Stage L/S Std. Vol. 1.2in Body

Peterson Fluid Systems R4 4-Stage Oil Pump. This is a left-side mount, rear-drive pump with 1.200 in pressure and standard volume scavenge stages. It features a 5/8" drive shaft with a 3/16" keyway. Designed for high performance and versatility in motorsports, it uses twisted lobe rotor design for consistent oil pressure and strong crankcase vacuum. Made from lightweight 6061 T6 aluminum housings and aluminum rotors. It includes a rear drive provision for mounting accessories like fuel pumps, vacuum pumps, or power steering pumps (with appropriate adapters). Proudly made in the USA, machined, assembled, and tested in Longmont, Colorado.