The Genuine BMW Cover Window Frame Door Rear Left (part number 51358223777) is a replacement cover for the window frame on the rear left door of a BMW vehicle. This cover is designed to fit securely and seamlessly onto the existing window frame, providing protection and a clean, finished look. It is a genuine BMW product, made with high-quality materials and designed specifically for BMW models. This cover is essential for maintaining the overall appearance and functionality of the vehicle's rear left door window frame.