Big Block Mopar Billet Oil Pump Drive, manufactured by PRECISION OIL PUMPS. Will fit all 383- 440 Mopar engines. They are CNC machined from ½" diameter Billet 4140 Chrome-Moly. Heat-Treated with Rockwell Hardness. Has a Black-Oxided tip and Heat-Treated gear .These are the strongest on the market.

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