The Genuine BMW Suspension Subframe Washer (part number 33306890582) is a small, circular metal washer designed to be used in the suspension subframe of BMW vehicles. It is a genuine OEM (original equipment manufacturer) part, meaning it is made by the same company that produces BMW vehicles. This washer plays an important role in the suspension system by providing a secure and stable connection between the subframe and other components. It is a high-quality, durable and reliable component that is essential for the proper functioning of the suspension system in BMW vehicles.