The McCormick 6616996A7 engine crankcase is an original equipment manufacturer (OEM) part designed for various McCormick tractor models, including the 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, X6.20, X6.30, X6.40, X6.50, X6.60, X6.70, X6.80, X6.90, X7.20, X7.30, X7.40, X7.50, X7.60, X7.70, X7.80, X7.90, X8.20, X8.30, X8.40, X8.50, X8.60, X8.70, X8.80, and X8.90 series. This genuine crankcase ensures proper engine function and durability for your agricultural machinery.