The Donaldson P552409 is a high-performance spin-on fuel water separator filter designed to protect critical engine components from harmful contaminants and water. Featuring an M20x1.5 thread, an outer diameter of 93 mm, and a length of 142 mm, this genuine Donaldson filter ensures superior filtration efficiency (99% @ 10 micron). It is a direct replacement for various OEM part numbers, providing reliable fuel system integrity for a wide range of heavy-duty agricultural, construction, and industrial machinery, including select John Deere and Volvo models.