Sorry ahead of time for what will be a very vague post but here goes -   Last winter I was on vacation and the weather was going to dip well below freezing for a few days so I had my brother winterize our boat ... he mentioned while taking apart the intake for cooling there was a small "T" that broke when he was pulling off the hoses.  The boat is still in storage but if anyone has a clue as to what part this may be so I can try and order things before I pull the boat out that would be