The McCormick 221286 Rocker Arm is a genuine OEM component designed for optimal valve train operation in McCormick CX series tractors. This essential engine part ensures precise opening and closing of engine valves, contributing to efficient combustion and reliable engine performance. Manufactured to McCormick's stringent quality standards, it provides durability and a perfect fit for models including CX70, CX75, CX80, CX85, CX90, CX95, CX100, CX105, and CX110.