This is a genuine McCormick 6646109A1 Channel, an original equipment manufacturer (OEM) part designed for various McCormick X-series tractors. It ensures proper fit and function, maintaining the integrity of your machinery. Confirmed for 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, X5.70, X5.80, X5.90, X6.30, X6.40, X6.50, X6.60, X6.70, X6.80, X6.90, X7.40, X7.50, X7.60, X7.70, X7.80, X7.90, X8.60, X8.70, X8.80, X8.90.