The Bosch 0280217100 is a hot film air mass sensor (MAF) designed to precisely measure the mass of air entering the engine intake system. This sensor provides critical data to the engine control unit (ECU) for optimal fuel injection timing and air-fuel ratio management. Key Features: Hot film sensing technology for accurate air mass measurement OE-quality construction from Bosch, a leading automotive sensor manufacturer Direct-fit replacement design for specific vehicle applications Durable housing resistant to contamination and temperature extremes Precise airflow measurement ensures optimal engine performance and fuel efficiency This Bosch air mass sensor is engineered to meet or exceed original equipment specifications, providing reliable performance and accurate readings throughout its service life. Proper MAF sensor function is essential for maintaining engine efficiency, reducing emissions, and preventing drivability issues.