The John Deere RE509031 is a genuine OEM fuel filter designed to provide superior filtration for a wide range of John Deere agricultural and construction equipment. This high-quality filter helps protect the engine's fuel system from contaminants, ensuring optimal performance and longevity. It is a direct replacement for the original filter and is also cross-referenced as Donaldson BF7674-D. Key specifications include an outer diameter of approximately 83.8 mm, a length of 140 mm, and an M16 x 1.5 thread size. This filter is crucial for maintaining fuel system cleanliness in compatible John Deere tractors, combines, sprayers, and other heavy machinery.