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The Peterson R4 four‑stage oil pump applies twisted‑lobe rotors and lightweight housings to deliver dependable oil pressure and efficient scavenging while minimizing package size. Internal scavenge passages and shallow fittings keep the unit compact. This cam‑drive variant is configured to be driven from the camshaft and retains the R4's modular mounting and rear‑drive accessory capability.
Peterson Fluid Systems R4 4-Stage Oil Pump - Cam Drive
