In the process of swapping out a failed alternator, everything going relatively smooth until one of the two lower bolts gets cross threaded putting the new alternator in. By the time I realize it and back it out, I think I've done damage to one of the threads on the bolt and it appears inside the receiving end as well (I can't put either of the other two good bolts into the hole before they stop at what I'm guessing is a bad internal thread). Looking for ideas?

At this point I probably need a new bolt and wondering if anybody knows the part number and/or size for these?
I don't have a tap kit nor experience in tapping cross-threaded holes, wondering if I'm best served letting a professional address this? Vehicle is disassembled inside my garage and inoperable..so, fixing the problem here is best case scenario versus towing to a shop.

What do you think?

 

Fixed...clean out the holes with WD40 and had one bolt that had a little burr. Ran it through my friends 10mm die to clean up the groves...all bolts are now securely in..hope this alternator lasts til death..pain in the butt getting to it where mounted.

 

Glad you got it fixed. No clue what engine you have, the but V8 is really easy to get to from below.

 

I have the V8...took off the plastic panel below the alternator. Easy to loosen the belt with a breaker bar; but a little tight getting to the electrical plugs and the upper bolt while lying on back. I imagine with a lift and the ability to raise both hands into the space it would be a little easier.

 

I did mine from the top, super easy. Admittedly I was replacing all the coolant hoses at the same time