The Whirlpool W11398648 is an indispensable part in your Whirlpool dishwasher, specifically functioning as a dishwasher actuator. An actuator effectively converts electrical information from the dishwasher's control board to physical movements. Consider it the link between the dishwasher's brain and its body.The W11398648 actuator is necessary for the operation of several functions in your dishwasher. For example, it might control the movement of the wash arm, ensuring that water and detergent are evenly distributed throughout the dishwasher during the wash cycle. It could also be in charge of opening and closing the detergent dispenser at the appropriate moment.A defective actuator could be the cause of your dishwasher's ineffective water circulation, poor dish washing, or failure to complete sessions.