This DELPHI Mass Air Flow (MAF) Sensor, part code AF10709-12B1, is designed to precisely measure the amount of air entering your engine's intake manifold. This critical data is sent to the engine control unit (ECU) to help determine the correct amount of fuel to inject for efficient combustion. A properly functioning MAF sensor is essential for maintaining optimal engine performance, fuel economy, and emissions control. When this sensor begins to fail, you may experience symptoms such as rough idling, hesitation, poor acceleration, or even a check engine light. Trust DELPHI's engineering expertise for a reliable replacement that meets or exceeds original equipment specifications. This sensor ensures your engine receives the accurate air intake information it needs to run smoothly and efficiently.