Whirlpool WP8564929 Dishwasher Rinse Aid Cap

The Whirlpool WP8564929 is a replacement cap made exclusively for the rinse aid dispenser in your Whirlpool, KitchenAid, or Maytag dishwasher. This small but critical component has a significant impact on your dishwasher's cleaning effectiveness. The rinse assistance dispenser contains a specific rinse chemical that helps to remove water spots and streaks from your dishes and glassware. The cap covers the dispenser's aperture, keeping the rinse agent from spilling out until needed during the wash cycle. When the dishwasher cycle reaches the rinse phase, the cap automatically opens to release a precise amount of rinse agent into the wash water. The rinse agent lowers the surface tension of water droplets, letting them to slide off your plates and glasses instead of adhering.