Huge Question... Help!

I need a gasket for around this section and cannot find what it is ANYWHERE. Even the Acura parts guys have no clue what I'm talking about.
I don't believe it's the "water pump gasket," as mine is already attached to this entire assembly. (See photo.) But I need the gasket from that entire assembly to the block. Anyone pleeeeeease?

I don't believe it's the "water pump gasket," as mine is already attached to this entire assembly. (See photo.) But I need the gasket from that entire assembly to the block. Anyone pleeeeeease?

