The McCormick 3663126M1 is a genuine OEM gear designed for use in a wide range of McCormick agricultural tractors. This essential component ensures reliable power transmission within the machinery, maintaining optimal performance and durability. It is compatible with numerous McCormick tractor series, including C MAX, CX, MC, T, V, X, X50, X60, X7, X70, and X8 models. Refer to your machine's parts catalog for specific application details and to ensure correct fitment.