Tension – it's what drives us to keep buying those 10-disc Alfred Hitchcock DVD collections over at Costco even though we can't stand Jimmy Stewart's southern-fried accent, and what drives the timing belts inside the bellies of our engines. However, your timing belt needs to be pulled to a precise tension in order to work properly, which is why you need a timing belt tensioner adjuster. Having this part means you'll achieve a level of tension not seen since the shower scene in Psycho. Best of all, you'll save with guaranteed low prices and free shipping at AutoAnything.