The Genuine BMW Covering Cap Headlamp Levelling Device (part number 63117343915) is a small plastic cap that is designed to cover the headlamp levelling device on select BMW vehicles. This cap is specifically designed to fit securely and seamlessly over the headlamp levelling device, providing protection and a clean appearance. It is a genuine BMW product, ensuring high quality and compatibility with your vehicle. This covering cap is an essential component for maintaining the proper function and appearance of your headlamp levelling device.