OK, to be more specific, does anyone know what this part is?
Is this the timing cover gasket expansion cover? I think this is the main source of the leak in my car.
Here are two pictures - the first is an overview picture - the second is a closer image.
Here is an overview shot of where it is
(Note, the shot is looking straight down from the top of the engine - the bottom part of the image is the radiator hose. The metal piece at the top right is where the oil filter plugs into (I think the whole plate that it actually belongs to is the timing cover.)