This HELLA Mass Air Flow (MAF) Sensor, part number 8ET 009 149-441, is engineered to accurately measure the amount of air entering your engine's intake manifold. This critical data allows the engine control unit (ECU) to adjust fuel injection and ignition timing for optimal performance. By providing precise airflow readings, this sensor helps maintain consistent engine operation, improve fuel economy, and reduce harmful emissions. It is designed to meet or exceed original equipment specifications, ensuring reliable and durable service. Proper functioning of the MAF sensor is vital for smooth idling, acceleration, and overall engine health. If you are experiencing issues such as poor fuel economy, rough idling, stalling, or check engine lights, replacing your MAF sensor with a quality part like this HELLA unit can resolve these problems.