These plugs sit at the dockside or deck connection points to keep dirt and debris out of your water intake. When you are not hooked up to a shore supply, a solid plug stops grit from getting into the lines. They are lightweight and usually made from materials that do not rust even when splashed with saltwater daily. Keeping the intake clean prevents clogs in your faucet aerators or shower heads later on. It is a small but important piece of gear that stays in place while you are out on the water.
marine water connection plug
Reliable, corrosion-resistant water connection plugs for boats.