Our factory proudly presents the Cummins Engine Part Tensioner Belt 3691279/3639118 for Cummins G50/K50/QSK50 Engines. This high-quality product ensures optimal engine performance by providing consistent and reliable belt tension. Our tensioner belt is made using premium materials and undergoes rigorous testing procedures to ensure excellent durability and longevity. It is designed to withstand extreme operating conditions and comes with a warranty for added peace of mind. As a factory, we take great pride in producing top-notch products that meet and exceed the expectations of our customers. Choose our Cummins Engine Part Tensioner Belt for a trouble-free driving experience.