The Genuine BMW Rear Heater Duct - 64228159764 is a replacement part for the rear heating system in BMW vehicles. It is designed to direct warm air from the heating system to the rear of the vehicle, ensuring that passengers in the back seats are kept warm and comfortable. This duct is made from high-quality materials and is an authentic BMW product, ensuring a perfect fit and reliable performance. It is an essential component for maintaining the overall functionality of the rear heating system in BMW vehicles.