Attwood Tsunami MK2 T500 90° Livewell Aerator Pump

The Attwood Tsunami MK2 T500 aerator pump is designed to keep livewell water moving so bait and catch receive a steady supply of fresh, oxygenated water. This version uses 90-degree thru-hull inlet, providing an angled inlet that helps when straight plumbing would interfere with surrounding structure. The MK2 platform was redesigned to make installation and service easier while retaining compatibility with earlier Tsunami components. It is a practical replacement or new-install option for fishing boats that need a dedicated livewell or baitwell pump.

Both straight and angled inlet and outlet options are supported across the MK2 family, giving installers more flexibility than a fixed plumbing orientation. The updated connection design is intended to reduce the need for sealant and specialized tools during normal installation. Backward compatibility helps owners upgrade an older Tsunami installation without rebuilding the complete livewell plumbing system. The serviceable layout also makes future pump maintenance less disruptive once the boat is rigged. The thru-hull inlet measures 3-1/2 in x 3/4 in.

• 90-degree thru-hull inlet suits the intended plumbing layout
• MK2 design supports flexible inlet and outlet orientation
• Backward compatible with earlier Tsunami installations
• Installation is designed to require fewer tools and less sealant

Mount the pump and plumbing so air cannot become trapped in the water path and support the hoses so vibration does not load the fittings. Test the livewell at the dock after installation and verify that the water level, overflow, and circulation rate are appropriate for the tank. For compatible replacement parts and related equipment, browse more Livewell & Baitwell Pumps.