1OE Number: The referencing OE number of this Ac compressor electronic control valve is ECV13, which is molded and designed depend on the original data. 2Fitment: The Ac compressor control solenoid valve is a replacement for Mercedes?Benz C240, replacement for Mercedes?Benz C320, replacement for Mercedes?Benz CL500. 3Function: When the compressor is turned on, the solenoid valve opens, connecting the system pipeline to make the air conditioning system operate normally. 4High Performance: This control valve is highly responsive, perfectly adapted to your car model, with fast control and recovery of air conditioning performance. 5Easy Installation: Easy to install, no modification, cutting, or drilling required. It adopts original standard, which is a perfect replacement and can perfectly match to your car.