Attwood Tsunami T500 Bilge Pump 12V 500 GPH

With their innovative engineering and compact design, Tsunami® pumps deliver high output from a small package. 
They use the most advanced materials available, including the best quality bearings and state-of-the-art brushes, alloys and magnets. Their patented shaft seal prevents leaks caused by misalignment. Caulked and tinned wiring eliminates wicking, prevents water damage, and resists corrosion. 

Tsunami Series pumps are "cartridge" pumps, with replaceable/interchangeable motor cores — making servicing simple and quick.