I know What it is, and I have a good idea that it connects to the 3 vac hoses dangling underneath the drivers side of the cab...but why was it on the passenger side floor?

I guess my questions is...what do I need to know about this thing, and, since it was removed, I assuming that something's wrong with it. Are they repairable/rebuildable? On line source?

It says Midland 30J308 or 300308