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The Peterson R4 single-stage oil pump provides 1.4" pressure in a left-side mount package with an integrated vacuum pump. Its twisted-lobe rotors and lightweight construction help maintain pressure and scavenge vacuum to reduce windage. The pump uses a 3/8" male hex shaft, includes a rear-drive provision for attaching accessories, and offers an adjustable relief for tuning oil pressure to the application.
Peterson Fluid Systems R4 1-Stage Oil Pump - Left Side Mount - HV - Rear Drive w/ Vac FR Hex
