The Gates 06-09 Audi A3 / 07-09 TT / 06-13 VW Passat DriveAlign Automatic Belt Tensioner is a replacement tensioner designed to provide consistent tension and longer belt life. It is precision-engineered to match the exact specifications of the original equipment part and features a durable construction with a corrosion-resistant finish for long-lasting performance. The tensioner is designed to work with the OE belt, and comes with all the necessary hardware for a quick and easy installation.