Has the temp sensor, just go scrappers and get a other 1 mate I think they all the same!
Not sure of the exact name but I replaced mine recently and it cost around £15 (incl the associated clip and blanking plug) from VW dealer spares
gsf sell them for dirt cheap, its called a water flange. do the side one at the same time as it wont be far behind if front one is leaking. they comer with new seals plus gsf also do the sensor seals too
Is it cracked and therfor leaking? or is it the seal thats leaking?... if it the seal then remove, get some sealant round it and then re-fit and should do the job, atleast till a new one is sourced