Hi Fergie, Thanks for your post.
The valve you ask about is part of an assembly offered as an option in our 4 engine (quad) boats to make flushing those engines a more friendly task.
It’s a Conbraco/Appollo product. Their part number is 87-124-01. It’s described as a bronze 5-port ball valve 1/2″.
Look lower in this message for a link to a site I found offering the valve. You might be able to find one locally. Please feel welcome to contact Intrepid as well (727-548-1260 ext 242 or 267).
Happy Boating!