High-Strength Belt Tensioner for Mack CXU Series with Cummins ISM Diesel Engine

Part number 20966526 is a professional belt tensioner specially designed for Mack CXU Series trucks equipped with Cummins ISM diesel engines. Made with high-strength materials and precision craftsmanship, it maintains steady belt tension under harsh working conditions, prevents belt slippage, rattling and premature damage, and ensures the entire drive system runs efficiently and stably. Fully compliant with original equipment standards, it features accurate size for hassle-free direct installation, great wear resistance and long service life, a cost-effective and dependable replacement part for your heavy-duty vehicles.