Review on ACDelco Professional Serpentine Drive Belt Tensioner Kit - ACK040378HD by Paul Dahl

Blow to 50 degrees air but I was a bit embarrassed to turn it on and use it because of the horrible squeaking noise it made when the AC was on. I noticed my accessory belt looked pretty cracked the last time I changed the oil, so I decided to replace the tensioner and belt in one go. I thought my compressor had failed because of the noise, but after installing this tensioner and belt I had no noise. And I noticed that the old tensioner had a lot of play from side to side and inside and out, so it's likely that it never got replaced, and it's very likely that the only problem was with the tensioner. The new tensioner is tensioned on all sides and rotates. Well. The belt is of very good quality. Now I have cold and still air, so I'm very happy.