Donno, don't really do OMCs,.....Bonds is that hose common? I've never seen that on any pictures of other OMC's.
I dont know what years had it. But here are 2 bell housings. One is from 1986 and the other is from 1996. I took the flywheel cover off of the one on the right to show where the hose comes through, marked with blue tape. The hose is there to drain out any water or oil that might acumulate down there.Was this strictly on the 4.3 or certain years?