The McCormick 3665383M91 System is a genuine OEM component designed for various McCormick tractor models, including the C Series (C100, C105, C110, C50, C60, C70, C80, C90), CX Series (CX100, CX105, CX110, CX50, CX60, CX70, CX75, CX80, CX85, CX90, CX95), MC Series (MC100, MC105, MC115, MC120, MC130, MC135, MC80, MC90, MC95), MTX Series (MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, MTX200), and XTX Series (XTX185, XTX200, XTX215). This essential system ensures proper functionality and compatibility within agricultural machinery. It is also compatible with a wide range of agricultural machinery from other brands such as Massey Ferguson, Landini, Fendt, and Valtra, ensuring broad application and reliable performance across multiple platforms.