A/C idler identification
 

I bought an idler pulley to get rid of my p/s off someone here a while back. It fell apart on my trip to VA and I can't figure out which version I have to get the part(s) I need for it. I guess in '01, they changed it a bit. I have either BP01-15-933 or R230-15-933 to identify it. It basically looks like a thick washer and is the "inner collar" or "spacer". The parts catalog makes them both look identical (neither of which looks like what I have) and maybe they are. Anyone have access to one of these parts or the whole assembly to verify which one it is, or knows off hand?