Bosch 0280218081 Mass Air Flow Sensor

The Bosch 0280218081 is a hot-film air mass meter (HFM-5-4.7) designed for engine management systems. It measures the mass of intake air entering the engine and transmits an analog voltage signal to the ECU for precise fuel metering and emission control. This sensor features a platinum hot-film sensing element mounted in a bypass channel, providing high accuracy and fast response time across the operating range. The housing is constructed from high-temperature resistant polymer with an integrated 5-pin Bosch compact connector. It serves as a direct OE replacement for Mercedes-Benz part numbers A0000941948 and 0000941948. Primary applications include Mercedes-Benz passenger cars and light commercial vehicles equipped with M111 gasoline and OM611 diesel engines. Compatible chassis codes cover W202 (C-Class), W210 (E-Class), R170 (SLK-Class), W163 (M-Class), and W903 (Sprinter).