This Listing is for ONE. BRAND NEW, IN ORIGINAL PACKAGING (when applicable). GENUINE Cummins ISX15 QSX15 Diesel Engine Belt Tensioner (Genuine Part) 3691282. The Cummins Belt Tensioner 3691282 is used primarily for XPI fuel systems on EPA13 Automotive 15 liter ISX/QSX engines. It’s the cheapest here and you will get it the fastest from me! Please DO NOT assume this item will come with anything that is not described nor shown in photos. Please look carefully at ALL photos before purchasing. We are more than happy to answer any and all questions you may have.