The New Holland 5111454 is an authentic OEM countershaft, a crucial component for the transmission system of various New Holland T4 series agricultural tractors. This part is engineered to New Holland's rigorous specifications, ensuring precise fitment and reliable power transfer within the gearbox. It is designed to withstand demanding operational conditions, contributing to the longevity and efficiency of the tractor's drivetrain. This countershaft is compatible with a range of T4 models, including T4.75, T4.90, T4.100, T4.110, T4.75S, T4.90S, and T4.100S.