The Genuine Mercedes-Benz W212 E-Class Engine M651 Air Mass Sensor A651905120080 is a high-quality OEM part designed specifically for Mercedes-Benz vehicles. This engine air mass sensor plays a crucial role in measuring the amount of air entering the engine, ensuring optimal performance and efficiency. With a weight of 0.236kg and dimensions of 14cm x 11cm x 11cm, this sensor is a perfect fit for the specified Mercedes-Benz models. The sensor's genuine OEM quality guarantees a reliable and exact fit, making it an essential component for maintaining the vehicle's fuel system.