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 precise control of air distribution in the vehicle's climate system.It regulates the position of the blend door to manage airflow between heating and cooling modes, consistent cabin temperature.The unit integrates directly into the HVAC housing and operates via electrical from the climate control module.It is engineered to match the specifications for fitment on compatible models.The actuator features construction to withstand regular and varying environmental conditions.Installation requires proper alignment with the blend door shaft and secure mounting within the dashboard assembly.This part replaces specified OEM numbers and functions as a direct-fit component for the designated vehicle applications.