These Full Flow Oil Pumps are a Genuine Schadek Pump without the outlet side of the pump machined. The pump body is modified to accept an O-Ring then Hard Anodized and the pump gears are REM ISF® polished to reduce friction, increase efficiency and extend component life. All JayCee Full Flow Pumps are designed to work with the standard 3 Bolt or 3 rivet cam gears.