Where can i find a Belt Tensioner?

I have a 1996 Chevrolet Monte Carlo with a worn out belt tensioner. I was wondering if any of guys/gals could direct me towards a new one. I have called myself searching for one but no luck. I would appreicate any help on locating one. Thanks in advance.

Sincerely,
Jesse

Autozone, Part# 305203
Advance Auto Parts, Part# 89203
O'reillys, Part# 38105
NAPA, Part# NBH38105

These Part #'s are for the 3100 V6..

I recently had the same problem woth my lumina, after a long search i had to just give up and order one from the dealership. I couldn't find it anywhere else, not even the junk yard. Good luck:)

AutoZone has a new tensioner IN STOCK, price varies in region. There's nothing too unique about this part....i've bought several of them for customers.