What is the make and model of this water pump and impeller?

[mwh2319]

[roadnsky]

What is the make and model of this water pump and impeller?

It's a MMI 502 flange pump. Sold here on this site.
The impeller as well.

https://moyermarine.com/product/flexible-impeller-csob_02_63/

I'd suggest you call Ken and maybe he can help with getting the missing thumb screw too?

[Surcouf]

make sure you have all the missing pieces .. I have the impression on one pic that a piece of the impeller is stuck in the exhaust port.

[Dave Neptune]

Caution

You have a couple of veins missing off the impeller and they can jam in a passage. However they are small and "usually" work there way to the "exit fitting" on the manifold. Once you get the pump fixed and have run for a bit remove the "exit fitting" on the manifold as they usually get stuck there as it is about the smallest restriction in the system.

Dave Neptune

[mwh2319]

Thanks all, very helpful.
Mark