The Genuine BMW Empty Housing For Heater-Air Condit.Unit - 64119238644 is a component used in the heating and air conditioning system of BMW vehicles. It is a housing unit that is designed to hold various components, such as the heater core and evaporator, which are responsible for regulating the temperature and air flow within the vehicle's interior. This empty housing unit does not come with any of these components pre-installed, allowing for customization and replacement of individual parts as needed. It is a genuine BMW product, ensuring high quality and compatibility with BMW vehicles.