The Genuine BMW Mass Air Flow Sensor is a high-quality replacement part for your BMW vehicle. It is designed to measure the amount of air entering the engine and send this information to the engine control unit. This sensor is crucial for maintaining proper air-to-fuel ratio, which is essential for optimal engine performance and fuel efficiency. It is made with durable materials and meets the strict quality standards set by BMW. This specific part has the part number 13627566990 and is compatible with various BMW models.