Cardone 74-20021 Remanufactured Mass Airflow Sensor (MAFS) On-car vehicle validation testing ensures product fits and functions properly OE components with high failure rates are 100% replaced All electronic modules are 100% tested to ensure they meet OE requirements for the application Advanced robotic equipment ensures precision made units and consistent high quality with every part Precisely track OE output curves and maintain spec tolerances to ensure accurate feedback to the ECM and scan tool readings