The McCormick 6679976A1 is a genuine OEM shim set designed for the reverser system in various McCormick agricultural tractors. This essential component ensures proper clearance and alignment, contributing to the smooth and efficient operation of the transmission. It is compatible with McCormick C, CX, MC, and MTX series models, including C100, C105, C110, C115, C50, C60, C70, C80, C90, CX100, CX105, CX110, CX50, CX60, CX70, CX75, CX80, CX85, CX90, CX95, MC100, MC105, MC115, MC120, MC130, MC135, MC80, MC90, MC95, MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, and MTX200 tractors. Using genuine McCormick parts like the 6679976A1 shim set helps maintain the integrity and longevity of your machinery.