Thread on the turbo compressor housing came off!

[FattyBoomBatty]

Yeah, if you want to do it yourself, you can go to ace hardware, take the bolt with you and find a nut that screws all the way on, since they have all the sizes and pitches labeled on those drawers, you will know what size of a tap to get, you can even bring the housing with you in the store to see if it's even feasible to tap the existing hole. If the threads are simply gone, as it looks like they are, you'll have to drill a larger hole.

But, like 311evo said, in that case, you have helicoils which can be bought as a kit from napa or probably any other auto parts store. Just remember the size and pitch from the hardware store, so you get the right helicoil kit.