This Mass Air Flow (MAF) sensor from DELPHI is designed to accurately measure the volume and density of air entering your vehicle's engine. By providing this critical data to the engine control unit (ECU), it enables precise adjustments to the fuel injection and ignition timing. Proper functioning of the MAF sensor is essential for maintaining smooth engine operation, improving fuel efficiency, and reducing emissions. A faulty sensor can lead to various drivability issues, including rough idling, hesitation, poor acceleration, and illuminated check engine lights. DELPHI's commitment to quality ensures that this AF10378-12B1 sensor meets stringent manufacturing standards. It is engineered for reliable performance and durability, offering a direct fit for seamless installation. Replace your old or malfunctioning MAF sensor with this high-quality component to restore your engine's performance and efficiency.