Genuine BMW Cabin Filter Air Channel - 64318379958: Genuine BMW Cabin Filter Air Channel - 64318379958 is a replacement part for BMW vehicles that helps keep the air inside the cabin of the car clean and free of pollutants. It is designed to trap and filter out dust, pollen, and other airborne particles, ensuring that the air you breathe while driving is fresh and healthy. It is a direct replacement for the original filter and is made with high-quality materials to ensure a long-lasting product.