5Q0907511K Body Parts AC Heater Blend Door Actuator Defrost T1032216WA 5WA907511B For A3 Convertible (8v_) 1.4 TFSI This AC heater blend door actuator is designed for use in climate control systems to regulate airflow direction and temperature distribution within the vehicle cabin.It controls the position of the blend door, which directs air through the heater core or bypasses it, allowing adjustment between hot and cold air outputs.The unit integrates into the HVAC housing and operates via an electric motor that responds to input from the climate control panel.It is compatible with specific models of the A3 Convertible equipped with the 1.4 TFSI engine.The actuator ensures precise movement and stable for consistent cabin comfort.Installation requires proper alignment with the HVAC ductwork and secure electrical connection to the vehicle's control system.