The Bosch 0280218232 Mass Air Flow (MAF) Sensor utilizes OE technology to deliver precise airflow measurement for optimal engine performance and emissions compliance. This hot film MAF sensor measures the mass of air entering the engine, providing critical data to the ECU for accurate fuel mixture calculations. Key Features: Hot film sensor technology for accurate mass airflow measurement OE-quality calibration ensures proper function and trouble-free operation Pre-calibrated with housing assembly for plug-and-play installation Maintains emissions compliance and fuel efficiency Designed to meet or exceed original equipment specifications Important Installation Note: This MAF sensor is factory-calibrated as a complete assembly with the housing. The sensor element and housing must be replaced together as a unit. Do not attempt to replace only the sensor element unless specifically recommended by the vehicle manufacturer, as this will result in incorrect calibration and improper engine operation. Bosch is a trusted OE supplier to major automotive manufacturers worldwide, bringing the same quality and precision to the aftermarket replacement parts industry.