The McCormick 3311594M91 is an original equipment manufacturer (OEM) hour meter designed for precise tracking of engine operating hours in a wide range of McCormick agricultural tractors. This essential component ensures accurate maintenance scheduling and operational monitoring for models including the CX, MC, MTX, X4, X5, X6, X7, and X8 series. It is also cross-referenced as an OEM part for Massey Ferguson, Landini, and Valtra equipment, guaranteeing reliable performance and direct fitment.