Hi Myk, thanks for initiating contact. Yes, there is. The idler pulley guides the belt path while the tensioner pulley applies the necessary tension. They work together to keep the serpentine belt system operating smoothly and efficiently. Replacing both components at the same time is often recommended if one has failed, as the bearings in the pulleys wear at a similar rate. If your vehicle information matches this product click the link below to order directly and take advantage of our current discounts and limited supply. Happy shopping! https://www.carparts.com/accessory-belt-tensioner/ac-delco/ac38177?can=CPGG4850_CSQA_20240724

Hi, Slot the 3/4-inch socket onto the end of your breaker bar. Slide the socket onto the end of the bolt that protrudes from the belt tensioner just above the main crankshaft pulley.