Bosch Mass Air Flow Sensor - 0280218060: Bosch Mass Air Flow Sensor (MAF) is designed to measure the amount of air entering the engine. It is an electronic device that reads the amount of air entering the engine and sends a signal to the engine control unit (ECU). The ECU then adjusts the fuel and ignition timing accordingly. The 0280218060 model is a direct replacement part for many vehicles. It is a durable and reliable part that can help improve engine performance.