Genuine OEM Volkswagen Air Conditioning Adjuster Unit, part number 3Q1898141. This mechanical component is responsible for controlling various elements within the air conditioning system, such as blend doors or ventilation flaps, to regulate airflow and temperature. It is an integral part of the HVAC assembly. Measuring approximately 15 cm long, 14 cm wide, and 8.5 cm high, this unit weighs 0.102 kg. Choosing a genuine OEM adjuster unit ensures accurate movement and durable operation, maintaining optimal climate control performance and preventing common issues like stuck flaps or inconsistent air delivery.