Ok, I have this mystery part. It was on the cradle I had my out drive on. I have never seen this part till I was putting my out drive back it. It looks like a 3/8” brake line that is about 4” long with a flair on one end. No fitting, painted black. Is this from my out drive? Cant seem to find it listed on any parts break down.
TIA
Mike

That doesn't sound like anyhting I know of, if you could post a picture it would help alot.

Pin for the exhaust flapper from inside the Y pipe sometimes comes out when you remove the drive, or may even be inside the exhause cavity inside the drive.
Just a guess...