Can anybody tell me what this part is called that I've outlined in red? It is at the top of the engine mostly dead center, offset right just a little. 2014 GL450 US spec.

? I can't find it anywhere in the online parts diagrams. Part of one of the hoses is broken, and a bolt is missing, so I want to fix, but I can't find it!

Thanks

 

Nevermind. I'm an idiot. It's the MAP sensor. Now to find the hose that comes off the bottom of it.