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The Peterson R4 four-stage oil pump delivers high-volume pressure and scavenge in a lightweight, left-side mount package with rear drive. Peterson’s twisted‑lobe rotors provide consistent pressure even with high‑temperature, low‑viscosity oils while the scavenge sections pull crankcase vacuum to reduce windage. The R4 features a 5/8" drive shaft with 3/16" keyway, shallow screw‑in fittings and rear drive provision to attach accessories with the proper adapter. Made in the USA.
Peterson Fluid Systems R4 4-Stage Oil Pump - Left Side Mount - HV - Rear Drive Drag
