This high-quality belt tensioner is designed to fit Cummins QSZ QSX15 ISX15 models perfectly. Made in China, it is a reliable and durable part that ensures your heavy equipment's optimal performance. The tensioner is specifically designed for the belt system, ensuring a perfect fit and maximum torque transfer. Whether you're replacing a worn-out tensioner or upgrading your equipment, this belt tensioner is an excellent choice. It is compatible with various Cummins models and is made of high-quality materials that guarantee longevity. Get your heavy equipment back to its original performance with this reliable belt tensioner.