That is just the pulley I'm sure he needs the whole assembly.
Here is a brand new GM tensioner that got an ear broke off when mounted on a new engine. Has ZERO run time and has been fixed (welded) and I'm sure it is just fine. Long bolt does not come with it, just showing it all lines up fine. Does NOT have a pulley but they can still be bought new. I'll take $50 and $12 mailing for it. Thanks Mike
Lucky you bought it when you did off of me. My buddy asked me this week if I knew where to get one. I hope someone out there will be making these tensioners again.