We have a replacement pump made by RFT in stock. These have proven extremely reliable and also use the same impeller. The cover plate seal is an O ring.
This pump fits exactly the same as the original pump on your engine.
Pump list price is $335 and you will need a hose barb which is about $10.
Thanks for the info. I take it then we could just swap out pumps and not have a hose issue with eather the raw water coming in or going out? Say at anchor if we have a leaking pump. That has happened on a passage an we did make it to our destination but it was a slow go. We want a spare pump.