Attwood Tsunami Cartridge Bilge and Aerator Pumps are powered by dependable, long-lasting motor cartridges that are replaceable and interchangeable. These high efficiency, compact pumps feature housings made of rugged, glass and mineral filled polymer, making them able to withstand hull pounding and resist chemicals. Both aerator and bilge pumps include a 29" wire and connector. Motors feature with watertight seals. 12 volt DC power.