The Genuine BMW Cover Activated Charcoal Filter, part number 51717895927, is a replacement cover for the activated charcoal filter in BMW vehicles. This filter is responsible for removing harmful pollutants and odors from the air that enters the car's cabin. The cover is designed specifically for BMW models and ensures a perfect fit and function. It is made of high-quality materials and meets all BMW standards for durability and performance. This cover is an essential component for maintaining a clean and healthy air environment inside the vehicle.