I accidentally ordered the wrong replacement impeller for my Yanmar 3GM30F. I have the Johnson raw water pump.
If anyone is interested, I have the following:
1 - Impeller P/N 124223-42092
1 - Cover P/N 121575-42150
2 - Gaskets P/N 124223-42110
Happy to sell for $50+ shipping (impeller alone is $42).
We live in Alexandria, VA and keep the boat in Deale, MD so pickup can be arranged for any locals.