This Mass Air Flow (MAF) sensor, part number AF10402-12B1 from DELPHI, is designed to accurately measure the volume and density of air entering the engine's intake system. By providing precise air intake data to the engine control unit (ECU), this sensor enables the ECU to calculate the correct amount of fuel to inject for optimal combustion. This leads to improved engine performance, better fuel economy, and reduced emissions. Crafted with high-quality materials and advanced sensor technology, the DELPHI AF10402-12B1 offers reliable and consistent performance. It is engineered to meet or exceed original equipment specifications, ensuring a proper fit and function in your vehicle. Proper functioning of the MAF sensor is crucial for overall engine health. A faulty sensor can lead to various drivability issues, including rough idling, hesitation, stalling, and poor acceleration. Replacing a worn or malfunctioning sensor with this DELPHI unit can restore your engine's performance and efficiency.