The MB Trac 6012000970 is a genuine OEM belt tensioner roller specifically designed for the V-ribbed belt system in various MB Trac models, including the 700, 800, 900, 1000, 1100, 1300, 1500, 1600, and 1800 series. This essential component, with an outer diameter of 70 mm and a width of 28 mm, maintains precise tension on the accessory drive belt, preventing slippage and ensuring the reliable operation of engine accessories. Weighing 0.3 kg, it is built for durability and a perfect fit, guaranteeing long-lasting performance and reducing wear on other belt-driven components.