This product is a genuine HVAC (Heating, Ventilation, and Air Conditioning) heater control valve designed for use in Volkswagen and Audi vehicles. The part number for this valve is 5Q0122093A. It is a high-quality replacement part that is specifically designed to fit and function like the original equipment installed in your vehicle. This valve controls the flow of hot coolant through the heater core, allowing you to adjust the temperature inside your car. It is an essential component for maintaining a comfortable and functional HVAC system in your vehicle.