JABSCO PUMP WTIH ELECTRIC CLUTC 12V, 83 GPM. Port size 2" NPT. Electric clutch provides remote operation. Uses Jabsco Nitrile impeller 6760-0003(OR). 400-2200 RPM speed range. Can be used with a Jabsco 4732-0000 Vacuum Switch for automatic shut-off to prevent dry running. Becomes an automatic bilge pump when used with a float switch of an appropriate amperage rating. GPM figures are based on running at 1750 RPM.