The McCormick 3686142M1 is a genuine OEM piston ring designed for optimal engine performance and durability. This essential component ensures proper compression and oil control within the engine. It is compatible with various McCormick CX series tractors, including CX70, CX75, CX80, CX85, CX90, CX95, CX100, CX105, CX110, and CX110L models. Additionally, it fits Massey Ferguson 4200 and 4300 series tractors, such as 4215, 4220, 4225, 4235, 4240, 4245, 4255, 4260, 4265, 4270, 4315, 4320, 4325, 4335, 4345, 4355, 4360, 4365, and 4370. Weighing approximately 0.02 kg, this piston ring is a critical component for engine maintenance and repair.