I'm working on drip timing my OM617 and the IP has a box attached to the back of it (between the engine and IP) which is restricting access to one of the bolts I need to loosen in order to adjust the IP. Below is a pic of my IP and I circled the box I am referring to. I think it is an emissions part, but whatever it is I cannot figure a way to get on the bolt that is to the left of it.

Does anyone know whether this part can be removed? It looks like a PO cut whatever wires were coming out of it. Or are there any tricks to getting at that bolt?