The McCormick 3618953M2 PTO shaft is a genuine replacement component designed for power take-off systems in a wide range of agricultural tractors. Measuring 330mm in length with a 25mm diameter and 6 splines, this robust shaft ensures efficient power transmission from the tractor engine to implements. It is compatible with numerous McCormick, Massey Ferguson, and Landini tractor models, serving as a direct replacement for earlier revisions such as 3618953M1 through 3618953M20.