Review on ACDelco 39087 Professional Automatic Tensioner by Daniel King

As a result of my TESTS, i determined that this product was a complete disappointment .Not only did it fail to function properly, but it also caused damage to other parts of my car. The only positive aspect was that it was easy to install. However, this small benefit was overshadowed by the fact that it couldn`t even perform its intended job. Save yourself the headache and steer clear of this inferior product..