This is our 8 GPM flexible impeller bilge pump. Usually mounted below deck near the bilge (not submersed), this pump is ideal for evacuating large amounts of water at once. This pump can also function as a baitwell pump, washdown pump, or for any bulk water transfer application. Note: as with all impeller pumps, water provides lubrication to the impellers in order to keep the pump running optimally. Do not run dry.