like a vent/exhaust hose to get fumes out of engine compartment? If so I would think this could be had at at like lowes or home depot or even Ace hardware. Is not a standard id?
This is the rubber piece that goes around the muffler as it leaves the boat through the transom and keeps the water out. Not what you need? Can you post a pic of what you have now?
The motor is a 720. The rubber hose is 3ft long from the muffler to the exhaust outlet. I am leaking at the tip but cannnot tell if it's the hose or not. From the diagram it does not look like ther eis a clamp attached to the outlet. I do not have a pic as of yet as it's very hard to get to .