Hey guys. New to the forum. Sorry for the dumb question. I have a 98 GT with coolant leaking from where the upper radiator hose meets the engine. I'm not sure what the name of the part is. It looks like the thermostat housing, which then bolts onto the block. Well the leak is coming from where the housing meets the block. I went to auto zone to get the gasket for that piece and they gave me a "water sealant ring" or somthing like that. Basically it looks like big rubber O ring. Anyone know if that's the right part? Please let me know if you need more information, I'm not sure how clear that all was. Thanks in advance for any help.