I need to know what part this is

I was taking out the water pump because it was leaking after we got the car, (it sat for 8 years) because we assumed the gasket was leaking, took everything in the way out.
When I got to the water pump there was the water pump, and this bar like structure above it, is this part of the water pump or something else, because when I was taking it out, I tried to loosen a piece and the bolts were rusted and snapped off irrecoverably.

There's a picture attached of the part removed (mind the shop towels on it, they're on there so I don't get gunk everywhere).