The Bosch 0280218175 is an OE-quality mass air flow (MAF) sensor designed to provide precise air measurement for optimal engine performance and fuel efficiency. This sensor utilizes hot film technology to accurately measure the mass of air entering the engine, allowing the ECU to calculate the correct fuel delivery for complete combustion. Key Features: OE Technology provides correct function and calibration for trouble-free operation Hot film sensing element pre-calibrated with housing assembly Ensures emission compliance and optimal fuel economy Direct-fit replacement designed to original equipment specifications Complete sensor and housing assembly—ready to install Important Installation Note: Bosch hot film MAF sensors are precision-calibrated with the housing as a complete unit. The sensor element should never be replaced separately unless specifically recommended by the vehicle manufacturer, as this can result in incorrect air flow readings and poor engine performance. This complete MAF sensor assembly ensures accurate air measurement, proper fuel trim, and reliable engine operation across all driving conditions.