The John Deere M808194 O-Ring is an authentic OEM component engineered to provide a reliable and leak-proof seal. Manufactured to John Deere's stringent specifications, this O-ring ensures optimal performance and longevity in hydraulic and fluid systems across a wide range of John Deere tractors, combines, and utility vehicles, including models like the 1023E, 4044R, and 8370R. With an outside diameter of 28.575 mm, an inside diameter of 22.225 mm, and a thickness of 3.175 mm, it offers a precise fit.