Tsunami MK2 Manual Bilge Pump - T500 - 500 GPH & 12VThe Tsunami Mk2 is the only manual bilge pump that eliminates airlocks. This is done by the Patented X-Air™ Impeller, which ejects trapped air in the pump and pipework. Also, the Tsunami Mk2 is the most reliable manual bilge pump in freshwater applications, considering it has 40% better protection against water ingress and electrolysis vs. the Mk1 pump.Easy Installation & Service GPH (Gallons Per Hour): 50090° rotatable elbow outlet allows users to install the pump anywhere in a full 360° orientationBackward compatible hole pattern and motor cartridges of Tsunami Mk1 bilge and aerator pumpsExternal mounting feet and integrated outlet reduces time and effortService pump cartridges from hard-to-reach areas using only one handSpecifications:Rated Volts DC: 12VFuse Size: 3 AmpWire Length: (inch) 29" / (mm) 735Hose Diameter: (inch) 3/4" and 1"*Must be used with appropriate Tsunami outlet