The Bosch Mass Air Flow Sensor - 0281006147 is a high quality and reliable sensor used in automotive engines to measure the amount of air entering the engine. This information is crucial for the engine's fuel management system to accurately calculate the correct air-to-fuel ratio for optimal performance and fuel efficiency. The sensor uses a hot wire or hot film technology to measure the air flow and sends this data to the engine control unit. It is designed to withstand harsh environmental conditions and has a long lifespan. The Bosch Mass Air Flow Sensor - 0281006147 is a direct replacement for the original equipment and is compatible with a wide range of vehicle makes and models.