The part number for the 1.8 was posted in your "croma cooling" thread...
https://www.fiatforum.com/croma-ii/348113-croma-cooling.html?p=3459325
Its part number 71746359
https://www.fiatforum.com/croma-ii/348113-croma-cooling.html?p=3459325
Its part number 71746359