Attwood Marine Tsunami T800 Dual Outlet Aerator Pump, 12V, 3/4 in Inlet

Overview

The Attwood Marine 4670-7 is a 12V Tsunami T800 dual-outlet aerator pump for livewell and bait tank systems. It is rated at 798 GPH and uses a short 7/8 inch inlet with a 3/4 inch seacock connection, which makes it a practical fit for boats that need steady water flow from a compact intake setup.

The dual-outlet layout lets one intake feed two livewells, or a livewell plus a separate low-pressure washdown line. The second outlet is built into the pump body, so the plumbing stays cleaner than a separate tee fitting and can be easier to route in tight rigging spaces.

Key features

• 12V T800 aerator pump with output rated up to 798 GPH
• Dual-outlet configuration for two livewells or one livewell and one low-pressure washdown line
• Short 7/8 inch inlet with 3/4 inch seacock fit for livewell intake plumbing
• 29 inch wire lead for hardwiring into a 12V livewell circuit
• No separate mounting bracket required
• Cartridge-style Tsunami design that makes service and replacement more straightforward

Installation and fit

This model is built for 12V DC systems and is meant to be used with a 3/4 inch seacock. The 29 inch wire lead gives enough length for many livewell pump locations, but it is still worth checking the run from the intake area to your switched power feed before ordering.

For proper priming, the pump should sit below the water source. If you are replacing an older or single-outlet livewell pump, check the inlet style, seacock size, and outlet hose routing so the second branch can be added without reworking the rest of the plumbing.

Use on board

This pump makes sense on fishing boats that carry two bait tanks, split flow between port and starboard livewells, or want a simple cockpit rinse line from the same intake. It also works well in refit jobs where the goal is to add a second water use point without adding another thru-hull.