The Lower Spray Arm enables your dishwasher to thoroughly clean dishes. Water is forced through the dishwashers lower spray arm, causing it to rotate as it sprays water and detergent over your dirty dishes. Since the arm rotates, it can be easily damaged by silverware and other items you place in the dishwasher baskets. The arm is designed with holes that can also clog with debris and hard-water deposits. If the lower spray arm becomes clogged or damaged, your dishwasher will fail to clean the dishes. Use this genuine replacement Lower Spray Arm to help ensure that your dishwasher uses its water properly and cleans dishes efficiently. Please check model fit list to ensure this part is correct for your model.