The John Deere RE15427 is a genuine OEM radiator filler neck assembly designed for a wide range of John Deere agricultural and construction equipment. This essential component ensures a secure and proper seal for the radiator, preventing coolant loss and maintaining optimal engine temperature. Manufactured to John Deere's rigorous standards, it provides reliable performance and a precise fit for compatible tractors, combines, sprayers, and other heavy machinery. This filler neck measures approximately 101.6 mm in length, 101.6 mm in width, and 76.2 mm in height, with a weight of about 0.09 kg.