0004312031 - Test connection, hose connectors OE number by MERCEDES-BENZ

MERCEDES-BENZ :   000 431 20 31, 0004312031, 000 431 2031
  OE Number - stands for Original Equipment Number - the number of complete component or sub-assembly that was originally fitted to the vehicle. OE Number is interchangeable with the term Genuine Number

Replacement parts compatible with OE numbers