The Attwood(R) Tsunami(R) T500 Aerator Pump uses the most advanced material available and delivers high output from a small packaged pump at 500gph. The patented shaft seal eliminates water damage and corrosion. This pump has a cooler running motor and waterproof wiring, while the cartridges are replaceable between bilge and aerator pumps. Utilize all that the Tsunami Aerator Pump by Attwood has to offer. FEATURES: Attwood Aerator Pump 500gph output capacity Move more water and oxygen into livewell tanks to keep fish active Cooler-running motors, premium materials, watertight seals and waterproof wiring Cartridges are replaceable and interchangeable between bilge and aerator pumps Model: 4640-7