This product is a genuine Mercedes steering column with a built-in steering angle sensor. It is designed specifically for the Mercedes ML320 model, with the part number 1634600516. The steering column is responsible for connecting the steering wheel to the rest of the steering system, allowing the driver to control the direction of the vehicle. The steering angle sensor measures the angle of the steering wheel and sends this information to the vehicle's electronic control unit, which helps with stability and traction control. This product is a high-quality and reliable replacement for the original steering column in a Mercedes ML320.