John Deere RE525523 Primary and Final Fuel Filter Kit enhanced protection for your engine by utilizing tight pleats and evenly spaced filtration media that effectively capture water and dust particles, minimizing damage to your fuel system. The water-repellent coated filtration media prevents water from soaking into the fuel, unlike uncoated s. This kit ensures a secure seal between the filtration media and the filter casing, preventing unfiltered, dirty fuel from reaching the engine. By reducing contaminants, it helps maintain optimal engine performance and fuel efficiency. The kit includes the RE520906 Primary Fuel Filter Element, RE523236 Final Fuel Filter Element, R522921 Fuel Filter O-Ring, R501388 Fuel Filter Packing, and RE523787 Fuel Filter Drain Valve. Model Number: RE525523