Kodiak Thru-Hull Bait & Washdown Pumps feature a non-corrosive design that will stand up to even the harshest environment. You won’t have to worry about salt rusting out this pump. Another real plus for boats with limited charging systems, these Kodiak pumps have a low amperage per gallon of water output ration. All Kodiak pumps are whisper quiet, so you won't scare the fish away. Thru-Hull models feature full port 3/4" female pipe thread for direct thru-hull mounting and an additional threaded port for the hose attachment to a diaphragm-type washdown pump.