The McCormick 6658732A1 Stirrup is a genuine OEM replacement part designed for various McCormick X-series tractors. This essential component ensures safe and stable access to the machine, maintaining operator safety and convenience. It is compatible with McCormick X4, X5, X6, X7, and X8 tractor models, including specific variants like X4.20, X4.30, X4.40, X4.50, X4.60, 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, X7.690, X8.660, X8.670, and X8.680.