The Genuine BMW Cover Rollover Protection Rear Left - 51437270485 is a protective cover designed specifically for the left side of the rear rollover protection system in BMW vehicles. This cover helps to shield the mechanism from dust, debris, and other external elements, ensuring its proper functioning and longevity. It is a genuine BMW product, meaning it is made with high-quality materials and meets the manufacturer's strict standards for fit and performance. This cover is an essential component of the rollover protection system, providing an added layer of protection and contributing to the overall safety of the vehicle.