I thought i might have to change my head gasket as water was running from the back of my cyl head. But after further inspection it tiurned out to be the outlet for the head, to in car heater ,. And the part in question is for them both heater out let and engine lifting bracket and its bolted to the head with three allen bolts.After its removed .Thats if you have an easy removal , because the bolts corrode . And this is due to coolant leaking on to the lifting eye bracket and the allen bolts.. The back of the bracket is a O ring that wants replacing ..Hope this helps others