Description
This is a genuine Bosch heater flap actuator for Audi A6 C5 models, supplied under OEM number 4B1820511C and Bosch reference 0132801129. It is an original HVAC air distribution motor used within the climate control housing to move an internal flap and direct airflow where the system commands it.
Its job is to position the heater or ventilation flap precisely so the cabin climate system can regulate airflow through the heater box. When operating correctly, it helps the system route air to the selected vents and supports smooth, accurate climate control response inside the vehicle.
Common signs of a faulty unit include incorrect airflow direction, air stuck on one vent position, clicking from behind the dashboard, weak response to climate control adjustments, or HVAC fault codes related to flap motor position. A worn actuator can also cause inconsistent cabin comfort and poor air distribution.
This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number before ordering. Professional installation is recommended, as access can require trim or dashboard work, and calibration, coding, programming or adaptation may be required depending on vehicle equipment and repair procedure.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/









