This DELPHI Mass Air Flow (MAF) sensor, part number AF10409-12B1, is designed to precisely measure the amount of air entering your engine. By providing accurate data to the engine control unit (ECU), it ensures the correct fuel-air mixture is maintained for efficient combustion. Proper functioning of the MAF sensor is crucial for overall engine performance, fuel economy, and emissions control. A faulty sensor can lead to various drivability issues, including rough idling, hesitation, poor acceleration, and increased fuel consumption. Trust DELPHI's engineering expertise for a reliable replacement part that meets or exceeds original equipment specifications. This sensor is built to withstand the demanding conditions within the engine bay, offering durability and consistent performance.