This product is a genuine BMW window guide web designed for the outside right side of the vehicle. It has a part number of 51357317784. This product is used to guide and support the window as it is rolled up and down. It is a high-quality, original BMW part and is essential for proper functioning of the vehicle's window system. This window guide web is specifically designed for the right side of the vehicle and is not compatible with the left side. It is made with durable materials to ensure long-lasting performance and is an important component for maintaining the overall functionality of the vehicle.