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The Peterson R4 four‑stage oil pump blends the twisted‑lobe rotor design with lightweight aluminum components to deliver strong pressure and effective scavenging in a compact package. Internal scavenge manifolds and shallow fittings ease installation in constrained engine bays. This bell‑housing mount, high‑volume variant is specified at 1.4" pressure and 1.2" scavenge and includes rear‑drive capability.
Peterson Fluid Systems R4 4-Stage Oil Pump - BH - HV - Rear Drive
