Complete HNBR O-Ring Kit for W123/W126. Fits all W123/W126 models. HNBR o-rings are required throughout the system if using R-134a refrigerant. Use with Klima Compressor Upgrade Kit only. Photo for demonstration purposes only.
Note that your W123 & W126 Mercedes-Benz does not use metric air conditioning fittings or hose. The system uses standard SAE sizes.