I have a 1979 Mariner 175V6. Serial Number 5190703. My large diameter trim line blew. The local marina can't get the part or the number. I have a two ram system with the fluid transfer bolts in the transom. The bolt end of the line is internally threaded with a flare in the seat. The pump end is externally threaded with a male flare end. A hydraulics guy that could not help me said its an old #4 size thread. I would like the number for both lines, so I can start and internet search. If anyone knows where I can get these line it would be a great help.
