Yesterday my AC compressor started making noise, and it sounds like it is going to seize. The AC doesn't work anyway, and I was wondering if it is possible to purchase a bypaass belt without removing the compressor.

 

You should be able to by-pass it with a Gates belt K060810. I don't have access to a diagram, but that is listed as a belt for the 4.0L without A/C.

 

If your A/C is not working, the problem is not with the compressor (as it is not turning) but the clutch. Likely losing a bearing. Yes, you can bypass with the correct belt. The clutch bearing can be replaced as well if and when the time comes to address A/C issues.