The McCormick 6679051A1 Joint is a genuine OEM replacement part designed for various McCormick X-series agricultural tractor models. This essential component ensures proper articulation and function within the machine's system, maintaining optimal performance and reliability. It is compatible with models including X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.80, X4.90, X5.20, X5.30, X5.40, X5.50, X5.60, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, and X8.680. Refer to your machine's parts catalog for specific application details.