The HELLA Mass Air Flow (MAF) Sensor, part number 8ET 009 149-131, is engineered to accurately measure the amount of air entering the engine's intake manifold. This critical data is sent to 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 name in automotive components, known for its commitment to quality and reliability. This MAF sensor is designed to meet or exceed original equipment specifications, ensuring a direct fit and dependable operation for your vehicle.