At DMG Motorsports, we present the HARDDRIVE POL Oil Pump Big Twin 73-91, a cast aluminum oil pump CNC machined to close tolerances and polished to a high-gloss finish. Its oiling system routes surplus oil back to the main passage and splits bottom- and top-end oil supply, offering an upgrade opportunity for earlier engines and increased oil pressure to the hydraulic lifters and top end.

Features:

• Designed for Big Twin applications from 1973-1991.
• Cast aluminum construction, CNC machined to close tolerances and polished to a high-gloss finish.
• Routes surplus oil back to the main passage rather than the return.
• Splits bottom- and top-end oil supply.
• Includes gaskets, drive shaft with keys and snap ring, mounting hardware, check ball, and pressure relief valve assemblies.
• Optional oil supply fitting locations support customization; models with oil tanks below the transmission should use stock locations for best lubrication performance.
• Cases manufactured from 1970-1980 may require drilling.

Fitment