The Bosch 0280218090 Mass Air Flow (MAF) Sensor is an OE-quality replacement component engineered to restore proper engine performance and fuel efficiency. Utilizing hot film technology, this sensor accurately measures the mass of air entering the engine to help the ECU calculate optimal fuel delivery and maintain emission compliance. Key Features: OE technology provides correct function and calibration for trouble-free operation Hot film MAF sensor pre-calibrated with housing for accurate air flow measurement Complete assembly ensures proper fitment and eliminates calibration issues Helps maintain proper air-fuel ratios for optimal engine performance Designed to meet emission compliance standards Direct replacement for worn or failed OEM mass air flow sensors Important Installation Note: This sensor is calibrated as a complete unit with the housing. The sensor element should never be replaced separately unless specifically recommended by the vehicle manufacturer, as this will result in incorrect calibration and poor engine performance. Bosch is a trusted OE supplier to major automotive manufacturers worldwide, ensuring this MAF sensor meets strict quality standards for reliability and longevity.