This Thermostat - Water Pipe diagram displays the required parts for the Cx500 1978 Italy Thermostat - Water Pipe.
Parts such as the Thermostat - Water Pipe: Case,thermostat, Water Pipe,rr., Bolt,special,5x22, Thermostat are included in the Cx500 1978 Italy Thermostat - Water Pipe parts fiche.
On this parts fiche the Bolt,flange,6x25 is the most specified component.