The Case IH 93138C1 is a genuine OEM clutch master cylinder piston ring designed for a wide range of Case IH agricultural and industrial equipment. This precision-engineered piston ring ensures proper sealing and function within the clutch master cylinder, critical for reliable clutch operation. With an inner diameter of 114.02 mm and a thickness of 1.78 mm, it provides an exact fit for specified models, maintaining hydraulic integrity and preventing fluid bypass. Essential for clutch system maintenance and repair, ensuring optimal performance and longevity.