The DELPHI Mass Air Flow (MAF) Sensor, part number AF10633-12B1, is engineered 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 calculate the correct amount of fuel to inject for combustion. Proper functioning of the MAF sensor is vital for maintaining optimal engine performance, improving fuel economy, and reducing emissions. A faulty MAF sensor can lead to various drivability issues, including rough idling, hesitation, stalling, and reduced power. This DELPHI sensor is designed to meet or exceed original equipment specifications, ensuring reliable and consistent performance. Replacing a worn or malfunctioning MAF sensor with this DELPHI unit can restore your vehicle's performance and efficiency. It is a direct-fit replacement, designed for easy installation without the need for modifications. Trust DELPHI for quality and precision in engine management components.