The McCormick 4204925M1 is a genuine OEM drive pinion featuring 10 teeth, designed for precise power transmission in various McCormick CX, MC, and MTX series tractors. This essential component ensures reliable operation and is manufactured to original equipment specifications for optimal performance and durability. Confirmed fitment includes models such as CX100, CX105, CX110, CX115, CX50, CX60, CX70, CX75, CX80, CX85, CX90, CX95, MC100, MC105, MC115, MC120, MC135, MC80, MC90, MC95, MTX110, MTX120, MTX125, MTX135, MTX140, MTX150, MTX155, MTX165, MTX175, MTX185, MTX200.