The Genuine BMW Cabin Clean Air Channel (E38) - 64118390380 is a part used in BMW vehicles to improve the air quality inside the cabin. It is designed to filter out dust, pollen, and other pollutants from the outside air before it enters the car's ventilation system. This helps to keep the air inside the car clean and fresh, providing a more comfortable driving experience. The cabin clean air channel is a genuine BMW product, ensuring high quality and compatibility with the vehicle. It is specifically designed for the BMW E38 model.