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The Peterson Fluid Systems R4 five-stage oil pump is a motorsports-focused pump born from over 50 years of fluid engineering, using twisted lobe rotors to provide consistent pressure and strong scavenge vacuum even with low-viscosity oils. Its lightweight construction with shallow fittings and aluminum rotors keeps mass low while delivering reliable flow. The R4 includes a 5/8" steel drive shaft with rear-drive provision to mount common accessories and is offered in configurable volumes and fittings to suit racing and endurance applications.
Peterson Fluid Systems R4 5-Stage Oil Pump - BH - Rear Drive
