When it's time to clean out your boat motor's cooling system, use the Attwood Universal Outboard Dual Water-Feed Motor Flusher to wash away all the accumulated salt, sand, silt, and alkali that causes clogging and corrosion. This outboard flusher from Attwood easily attaches to an ordinary garden hose, and the molded cups deliver clean water to your cooling system through the side intakes on the motor's lower unit. Fits with most domestic, imported, inboard/outboard, and outboard engines. Note: Do not use full flow from hose. Flushes your boat motor's cooling system Cleans away salt, sand, silt, and alkali Attaches to an ordinary garden hose Fits most engines