The Dispenser Gasket is an OEM part for Bosch dishwashers. This gasket forms a seal around the detergent dispenser, ensuring that water and detergent are properly contained within the dispenser until they are released during the wash cycle. It helps prevent leaks and ensures efficient operation of the dishwasher’s detergent system. Causes of a bad dispenser gasket can include regular wear and tear, exposure to high temperatures, and the use of harsh detergents.  Symptoms of a bad dispenser gasket include: Leaks around the detergent dispenser area Detergent not being dispensed properly Visible cracks or wear on the gasket Water pooling inside or outside the dispenser This OEM Bosch part is also compatible with Thermador, Gaggenau, and some Kenmore models.Part Number 00166637 (AP2802339) replaces 166637, 935395, AH3439223, EA3439223, PS3439223, PS8697166.