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The Peterson R4 four-stage oil pump is a high-capacity unit with left-side mount, rear drive, and adjustable relief suited to drag applications. Its twisted‑lobe rotors deliver solid pressure and the internal scavenge manifold provides strong vacuum scavenging to reduce crankcase windage. Built with low‑profile fittings and a compact layout, the R4 is configurable for various race applications and supports accessory mounting via the rear drive provision.
Peterson Fluid Systems R4 4-Stage Oil Pump - Rear Drive Left Side Mount - HV - Drag Adj.
