With their innovative engineering and compact design, Attwood Tsunami® pumps deliver high output from a small package. Attwood used the most advanced materials available, including the best quality bearings and state-of-the-art brushes, alloys and magnets. The patented shaft seal prevents leaks caused by misalignment and out caulked and tinned wiring eliminates wicking, prevents water damage and resists corrosion. It has replaceable/interchangeable motor cores (sold separately). Makes servicing simple and quick.