This HELLA Mass Air Flow (MAF) Sensor, part number 8ET 009 149-181, is engineered to accurately measure the amount of air entering your engine's intake manifold. By providing critical data to the engine control unit (ECU), it enables precise fuel injection adjustments. Proper functioning of the MAF sensor is vital for maintaining optimal engine performance, smooth idling, and improved fuel economy. A faulty sensor can lead to various issues, including poor acceleration, increased fuel consumption, and engine warning lights. HELLA is a trusted name in automotive components, known for its commitment to quality and reliability. This sensor is designed to meet or exceed original equipment specifications, ensuring a direct fit and dependable operation for your vehicle.