I gotcha now, you would like the part number the elbow.
I don't believe your going to be able to find that online or even at a mercruiser dealer as that elbow seems to come as part of the hose. They sometimes don't break down the part numbers. The only small chance you may try is emailing your question to Mercruiser customer support to see if by chance they happen to know of a better parts break down system that they may have at their disposal.
See the note in the link below for a second idea.
https://bpi.ebasicpower.com/pc/MER32-861590/MER14L-IB