The McCormick 4208628M91 Fuel Tank Cap is a genuine OEM replacement part designed to provide a secure and tight seal for the fuel tank on various McCormick, Massey Ferguson, and Valtra agricultural machinery. This essential component helps prevent fuel spillage and contamination, maintaining the integrity of the fuel system. It is compatible with a wide range of tractor models, including McCormick X4, X5, X6, X7, X8 series, Massey Ferguson 4700, 5700, 6700, 7700, 8700 series, and Valtra A, N, T, S series.