The McCormick 3549990M91 is a genuine PTO (Power Take-Off) shaft, essential for transmitting power from the tractor engine to various agricultural implements. This OEM quality shaft is 476mm in length and features 6 precision-machined splines, ensuring a secure and efficient connection. It is specifically designed for a wide range of Massey Ferguson models, including the 100, 200, 500, and 600 series, and is also compatible with certain Landini and McCormick tractor applications, providing reliable performance and durability.