This genuine McCormick 6638707A1 Gasket Set is an essential component for maintaining the integrity and performance of your McCormick X4, X5, and X6 series tractors. Specifically designed for models including X4.20, X4.30, X4.35, X4.40, X4.45, X4.50, X5.35, X5.40, X5.45, X5.50, X6.40, X6.45, and X6.50. It provides a precise seal to prevent leaks and ensures optimal engine or hydraulic system operation. Manufactured to OEM specifications for durability and exact fitment.