The McCormick 6677999A1 is a genuine OEM V-belt designed for optimal performance and durability in a wide range of agricultural machinery. This essential belt ensures reliable power transmission for various systems, including those found in McCormick X4, X5, X6, X7, and X8 series tractors, as well as compatible Landini, Massey Ferguson, Challenger, Valpadana, Arbos, Goldoni, and Foton models. Measuring approximately 1200 mm in length and 12.7 mm in width, it is engineered to meet original equipment specifications for a precise fit and long service life.