The Genuine BMW Sealing Washer Edc (part number 33507851620) is a sealing washer used in the Electronic Damper Control (EDC) system of BMW vehicles. It is a small, circular metal washer that is designed to create a tight and secure seal between components in the EDC system. This washer is an original equipment manufacturer (OEM) part, meaning it is made by BMW and meets their strict quality and performance standards. It is an essential component in maintaining the proper functioning of the EDC system, which helps to adjust the suspension and improve handling and ride comfort.