The John Deere SU50215 is a genuine OEM O-Ring designed to provide a reliable and leak-proof seal in various John Deere agricultural, construction, and industrial equipment. With an inside diameter of 21.82 mm, an outside diameter of 27.15 mm, and a thickness of 2.62 mm, this O-Ring is crucial for maintaining system integrity and preventing fluid leaks. It is a direct replacement for part numbers R123087 and RE200870, ensuring perfect fit and performance across a wide range of John Deere tractors, combines, excavators, loaders, and more.