The McCormick 6676204A1 is a genuine OEM tensioner roller designed for a wide range of McCormick and Landini agricultural tractors. This critical component ensures proper belt tension, contributing to the efficient operation of the engine's accessory drive system. With an outer diameter of 70mm, an inner diameter of 17mm, and a width of 26mm, this roller is built to OEM specifications for reliable performance and durability. It is compatible with McCormick X4, X5, X6, X7, and X8 series, as well as various Landini 4, 5, 6, 7, and 8 series models.