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The Peterson R4 five-stage oil pump in right-side mount with rear drive and relief provision uses twisted-lobe rotors and lightweight construction to maintain pressure and scavenge vacuum under demanding conditions. The modular, low-profile body with shallow fittings and rear-drive capability allows engine builders to attach popular accessories and tailor the pump to specific race-focused installations.
Peterson Fluid Systems R4 5-Stage Oil Pump - Rear Drive B/H QM - Right Side Mount - Relief
