The Genuine BMW Mass Air Flow Sensor Connector Kit - 474475 is a comprehensive kit designed specifically for BMW vehicles. It includes all the necessary components to replace or repair the mass air flow sensor connector on a BMW car. The kit contains three main items: a mass air flow sensor, a connector, and a wiring harness. These components work together to accurately measure the amount of air entering the engine and provide this information to the car's computer for optimal performance. The mass air flow sensor is responsible for determining the air-to-fuel ratio, which is crucial for the engine to run smoothly and efficiently. The connector and wiring harness ensure a secure and stable connection between the sensor and the car's electrical system. This kit is essential for maintaining the proper functioning of the mass air flow sensor and ensuring the overall performance of a BMW vehicle.