This HELLA Mass Air Flow (MAF) Sensor, part number 8ET 009 149-201, is designed to accurately measure the amount of air entering the engine's intake manifold. This critical data allows the engine control unit (ECU) to determine the correct amount of fuel to inject for optimal combustion. By providing real-time airflow information, this sensor plays a vital role in maintaining engine performance, improving fuel economy, and reducing emissions. A malfunctioning MAF sensor can lead to poor acceleration, rough idling, increased fuel consumption, and check engine lights. HELLA is a trusted brand known for its high-quality automotive components. This MAF sensor is manufactured to meet stringent industry standards, ensuring reliable and consistent performance for your vehicle.