Unknown Kabota Genny Impeller help!

I have a Mainship 34 Mark III that I bought last year. Time to change the impeller in the Kabota D722-E Genny. Unfortunately I have NO information as to what imperller it uses. The owner manual does not cover marinized setups. Before I go ripping into the impeller houseing, looking for some info as to what impeller to get. Only identifying mark is the number 8820 or 8920. Previous owner is unavailable. Does anyone out there have a clue as to a part number or even where to go to get new impellers? Would be a great help.

thanks,
Ken

It kinda looks like an Oberdorfer pump to me .

Check with pumpsandpartsonline or pumpvender.com . They might help you identify the pump.The guys at Beta Marine in NC might be able to help also .