Can anyone identify what the part labeled "G" is? Is it just a cover that also braces the radiator? It looks like I have a coolant leak from the gasket between that part and the top of the oil pan.

Anyone seen this before?

 

Looking at the position and the way that part looks (hard to zoom in) could be a "snub mount"

 

"G" is the front Snub. It's part of the engine mount system. Fits into a cage adjacent to the radiator. There is a coolant line just behind the snub that has hose clamped to metal line. Might be leaking from the clamp. You can see the line at about 10-11 o'clock position adjacent to the black rubber snub (G).