Genuine OEM Volkswagen Heater Control Unit, part number 1K0819203A9B9. This unit is responsible for managing the vehicle's heating, ventilation, and air conditioning (HVAC) system, controlling fan speeds, temperature, and air direction. It is typically integrated into the dashboard or center console. Features a Satin Black 9B9 finish. Genuine OEM parts are manufactured to precise specifications, ensuring correct integration and reliable operation of the climate control system.