Oil filter housing leak

Hi everyone , I have a pretty major oil leak at my oil filter housing , can't seem to find a how to on this , can anyone enlighten me

Thanks !

Probably the gasket at the sandwich plate has failed, a few of us had the same problem back in this old thread:

http://www.fiatcoupeclub.org/forum/ubbthreads.php?ubb=showflat&Number=1526794&page=1

Thanks for advice , turns out it was oil cooler pipe , the o ring was so compressed it wasn't doing anything , had one on my spares car so all fixed , pig of a job but glad it's done , thanks again