The WD21X31900 is a genuine OEM User Interface Main Control Board. This primary control board is designed for dishwashers from the brand and manages the main functions of the dishwasher. It substitutes part numbers WD21X21917, WD21X22363, WD21X22951, WD21X23713, and WD21X24902. It is advisable to check your appliance service manual, get in touch with the appliance manufacturer, or consult a service technician to confirm the necessary part number for your appliance before making a purchase