Need Help identifying what goes here ... looks as though something is screwed in here???

 

A metal bracket that one of the plastic spark plug wire retainers snaps into, is supposed to be there.

 

Thanks for letting me know what goes there .... I noticed for some time but just got my power steering hose replaced (from NAPA) .... first I had a hole in my radiator AND top radiator hose which sprayed anti-freeze everywhere. Got that replaced and then noticed I had a steady power steering hose leak that sprayed power steering fluid EVERY where, every time I time I turned the steering wheel .... anyway after getting the power steering hose replaced, my mechanic noticed that both my valve gaskets was leaking oil - causing the engine to smoke from the residue of anti-freeze, power steering fluid and now oil!

Thankfully the gasket change was the last of my leaks .... ANYWAY

After washing the engine at the car wash - I noticed that something was missing on top there ... glad to know it was nothing major????