The McCormick 4221059M1 plug is a genuine OEM component designed for various McCormick X-series tractors, including X4, X5, X6, X7, and X8 models. This versatile plug also fits a wide range of Massey Ferguson, Valtra, Fendt, and Challenger agricultural and construction equipment, ensuring reliable performance and a precise fit. Manufactured to AGCO's stringent quality standards, it is an essential part for maintaining hydraulic or other fluid systems.