Don't know too much about these ones, but if you look on the ePer link under fiat commercials you will find the cooling system layout. I presume that you want the small S type hose. Looks fairly straightforward. Remove the two clips and the hose, slip two new jubilee clips over the new hose and slip it over the stubs (washing up liquid helps). Top up the coolant and run to temperature to release any air locks.