The Case IH 4129000 is a genuine OEM O-Ring designed for sealing various hydraulic and engine components in Case IH agricultural and construction machinery. This O-Ring features an inside diameter of 88.9 mm (3.500 inches), an outside diameter of 95.25 mm (3.750 inches), and a thickness of 3.175 mm (0.125 inches), ensuring a precise fit and reliable seal. It is critical for maintaining system integrity across a wide range of Case IH tractors, combines, cotton pickers, sprayers, and windrowers, preventing leaks and ensuring optimal performance.