The Bosch 0280218198 Mass Air Flow Sensor is an OE-quality replacement component designed to accurately measure the amount of air entering your engine. This precision sensor provides critical data to the engine control unit (ECU) for optimal fuel mixture calculations, ensuring proper engine performance and fuel efficiency. Key Features: Built to original equipment specifications for exact fit and function Precise airflow measurement for accurate fuel delivery calculations Factory-calibrated to ensure trouble-free operation and emissions compliance Hot-wire or hot-film sensing technology for reliable performance Direct replacement for worn or failed OE mass airflow sensors Bosch mass airflow sensors are engineered to meet strict OEM tolerances and provide the correct calibration required for your vehicle's engine management system. A properly functioning MAF sensor is essential for maintaining fuel economy, reducing emissions, and preventing drivability issues such as rough idle, hesitation, or check engine lights.