This genuine McCormick 3129139R1 drive belt is an original equipment manufacturer (OEM) part designed for McCormick CX series agricultural tractors. Measuring 2050 mm in length, 12.7 mm in width, and 8 mm in height, this high-quality belt ensures efficient and reliable power transmission. It is a direct replacement for worn or damaged belts, maintaining the integrity and performance of your machinery. Cross-referenced with Case IH and Landini part number 3129139R1, this belt guarantees precise fitment and durability for models including CX75, CX80, CX85, CX90, CX95, CX105, and CX110.