The Donaldson P553261 is a high-performance genuine spin-on fuel filter and water separator, engineered to protect sensitive engine fuel systems. It boasts a 10-micron efficiency rating, effectively removing particulate contaminants and separating water from fuel, ensuring optimal fuel quality and engine longevity. Key specifications include an outer diameter of 93 mm, a length of 178 mm, and an M16 x 1.5 thread. It is a direct replacement for numerous OEM part numbers, including Caterpillar 1R0750 and John Deere RE509031.