Review on Dorman 419 017 Automatic Belt Tensioner by Matthew Manning

This tensioner is not worth the investment .Through trial and error, I found that it is poorly designed and does not work efficiently. Despite following the instructions, the installation process was a nightmare and it ended up causing damage to my vehicle. The only pros are that it is affordable and comes with a warranty. However, it is not worth the potential damage it could cause to your car. Stick with a more reliable brand..