Attwood T500 Tsunami Bilge Pump. Tsunami Series delivers... with high-capacity, high-efficiency output. Tsunami Cartridge pumps have replaceable / interchangeable motor cores. Makes servicing simple and quick. Features: 500 GPH, 12V, Manual Electric centrifugal pump, 3/4" Hose Barb, Max head 8 feet, 1.7S Draw, uses 2.5A fuse, 36" Wire lead, Backed by Attwood's 3-Year Warranty.