The McCormick 6666426A1 is a genuine OEM drive shaft flange designed for various McCormick X-series agricultural tractors. This critical component ensures secure and efficient power transmission within the drive system, maintaining optimal machine performance and durability. Manufactured to McCormick's stringent quality standards, it provides a precise fit and long-lasting reliability for models including X4.20, X5.50, X6.440, X7.680, and X8.680.