Had to fix the seicento this morning following it dumping all coolant on a120. Thought chg had gone but it turned out to be the union where top hose from exp tank goes into bulkhead . Car now in garage following some remidial fux wuth a pen . Hope pics shiw oroblem ok. Ia this part union only ir dies ut come with hoses please and has anyone ekse had this union snap . ? nany thanks . Long live bic pens !!!