Upgrade your 5.9/6.7 Cummins with the Cummins 3947574 Belt Tensioner Assembly. Engineered as a direct-fit replacement, this assembly is crafted from high-quality materials to ensure optimal performance and durability. It maintains the factory specifications for a precise fit, enhancing the efficiency and reliability of your engine. Trust Cummins for superior quality and keep your engine running smoothly with this essential component.