The Donaldson P502594 is a high-quality fuel filter water separator spin-on designed for robust performance in various agricultural and construction machinery. This genuine Donaldson filter features a 10 micron efficiency rating (Beta 99) and a 1-14 UN thread, ensuring effective removal of contaminants and water from fuel systems. Its durable construction and cellulose media provide reliable protection for critical engine components, extending engine life and maintaining optimal fuel system performance. It is a direct replacement for numerous OEM part numbers, including John Deere RE509031, Caterpillar 1R0770, and Deutz-Fahr 01174482, fitting a wide range of John Deere models.