exhaust Y-pipe O-rings part numbers?

[Scott in nh]

Hey everyone, I'm having a hard time finding the correct O-rings for the Y-pipe on a 78 CVZ.
Thanks

[still_fishin]

That looks like three different o-rings if I'm not mistaken. I've only done a handful of ytube orings but I've never seen that style if it is three separate. I'd take the tube to the hardware store and size them there, add a little rtv, install it and forget you every had to Magiver it. 

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[still_fishin]

Or get the right part...

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[thedeuceman]

mercury has all the parts manuals on line
https://www.mercurymarine.com/en/us/parts-and-accessories/parts-catalog
78-82 898
https://public-mercurymarine.sysonline.com/Default.aspx?sysname=NorthAmerica&company=Guest&NA_KEY=NA_KEY_VALUE&langIF=eng&langDB=eng
it took some digging to find that

[Scott in nh]

Thanks Joe,
"it took some digging to find it" is an understatement! The parts link is very useful now that I am down to getting the engine in the boat!
Scott