100% new, never remanufactured, so there's no leftover debris that can cause sensor failure. 100% computer-tested to ensure the ECU receives accurate airflow readings under hard engine conditions, which are required to balance and deliver the correct air/fuel ratio to the engine in order to achieve clean burns. Proprietary sensing elements provide accurate airflow output to ECU over wide range of ambient temperatures. Manufactured to strict quality standards to ensure each part outperforms other air flow sensors in aftermarket.