Review on ACDelco 55574864 Original Equipment Tensioner by Logan Fisk

According to my experience this tensioner is a complete waste of money .it fails to keep the belt properly tensioned, resulting in annoying noises and eventually leading to belt slippage. The only positive aspect of this tensioner is that it is easy to install. However, that doesn't make up for its poor performance. I would not recommend this tensioner to anyone needing a reliable solution for their automotive belt system..