Engine coupler replacement

[BMK10]

I have to change the engine coupler before I put my motor back into my boat. I'm hoping you guys can help me find the correct part.
its a 3.0l mercruiser, came off an '87 starcraft.
Serial number: B646516

Is this the correct one?
https://www.iboats.com/shop/sierra-engine-coupler-18-2171.html
Thanks
Brad

 

[alldodge]

Your motor would have come with the one of two type couplers. The one in your link or a triangle mount type. So if yours looked liked the one in the link, then that is the one you need