The Pump to Sump Gasket is an OEM part for Bosch dishwashers. It serves as a seal between the dishwasher's pump and the sump, preventing water leaks during the washing cycle. This gasket is essential for maintaining the integrity of the dishwasher's internal components, ensuring that water flows where it's supposed to go without causing damage to the machine or your home. Causes of a malfunctioning Pump to Sump Gasket can stem from normal wear and tear, as repeated exposure to water and detergent can degrade the gasket over time. Improper installation may cause the gasket not to seal properly. Symptoms of a bad Pump to Sump Gasket include: Water leaking from underneath the dishwasher. Signs of water damage or corrosion around the pump or sump area. Unusual noises during operation, which may indicate water is seeping into areas it shouldn't. This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.Part Number 00171598 (AP2802457) replaces 171598, 935451, AH3439543, EA3439543, PS3439543, PS8697464.