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The Peterson Fluid Systems R4 three-stage oil pump is a lightweight, modular oiling solution built around a twisted-lobe rotor design with all-aluminum rotors to save weight and raise output. Internal scavenge plumbing and low-profile screw-in fittings reduce clearance. This left-side mount unit delivers 1.4" pressure and 1.2" scavenge with rear drive for racing engine applications.
Peterson Fluid Systems R4 3-Stage Oil Pump - Left Side Mount - HV - Rear Drive
