The Case IH 4985299 main shaft is a genuine OEM component designed for various Farmall C series tractors, including models 75C, 85C, 90C, 95C, 100C, 110C, and 120C. This critical transmission part ensures efficient and reliable power transfer within the tractor's drivetrain, maintaining optimal performance and durability. Manufactured to Case IH's stringent quality standards, it provides a precise fit and long-lasting operation for compatible machinery.