The ice maker water line is used to direct and supply water to the ice maker during the fill cycle. This waterline is located on the back wall of your refrigerator/freezer, is made of plastic and is 1/4” in diameter. If the water line becomes damaged it could cause water to leak on the floor and the tubing will need to be replaced. Please remember to disconnect the power and water supply before starting your repair. This is a genuine OEM part.