This is a genuine A/C evaporator temperature sensor for Volkswagen and Audi vehicles. The part number is 1H0907543A. It is designed to accurately measure the temperature of the A/C evaporator, which is an important component in the air conditioning system. This sensor helps to regulate the temperature and ensure optimal performance of the A/C system. It is a high-quality, reliable part that is specifically designed for VW and Audi vehicles.