The Donaldson P551422 is a high-quality spin-on fuel filter designed to provide superior filtration for John Deere engines. This 4-micron filter effectively removes contaminants from fuel, protecting critical engine components and ensuring optimal performance and longevity. It is a direct equivalent to the John Deere OEM part number RE522878 and is widely used across a broad range of John Deere agricultural, construction, and forestry equipment, including tractors, combines, excavators, and power units. Featuring a robust construction with an M85 x 2.0 thread size, an outer diameter of 108 mm, and a length of 178 mm, this filter offers reliable and efficient fuel system protection.