The Bosch 0280217103 is an OE technology mass air flow (MAF) sensor engineered to deliver precise airflow measurement for optimal engine performance and fuel efficiency. This hot film MAF sensor utilizes Bosch's proven sensor technology to provide accurate data to your vehicle's engine control unit, ensuring proper air-fuel mixture and smooth operation. Key Features: Hot film sensor technology for accurate airflow measurement OE technology provides correct function and calibration for trouble-free operation Pre-calibrated with housing for precise measurements Ensures emission compliance and optimal fuel economy Direct fit replacement for specific vehicle applications Manufactured to Bosch OE quality standards Important Installation Note: This MAF sensor is calibrated as a complete unit with the housing. Always replace the entire assembly unless the vehicle manufacturer specifically recommends replacing only the sensor element. Installing an improperly calibrated sensor can result in poor engine performance, increased emissions, and diagnostic trouble codes. Bosch is a leading OE supplier of mass air flow sensors, providing the same quality components used by vehicle manufacturers worldwide. This sensor delivers reliable performance and long service life.