The DELPHI Air Mass Meter, part number AF10364-12B1, is a critical component for your vehicle's engine management system. It precisely measures the amount of air flowing into the engine, providing essential data to the Engine Control Unit (ECU). Accurate air mass readings allow the ECU to calculate the correct amount of fuel to inject, leading to improved fuel efficiency and reduced emissions. A malfunctioning air mass meter can cause rough idling, poor acceleration, increased fuel consumption, and illuminate the check engine light. This DELPHI unit is designed to meet or exceed original equipment specifications, ensuring reliable and consistent performance. Proper installation and maintenance of this part contribute to the overall health and longevity of your engine.