The Donaldson P551605 is a high-quality genuine spin-on fuel filter designed with a water separator for superior fuel system protection. Featuring a 10 micron efficiency rating, it effectively removes contaminants and water, ensuring optimal engine performance and longevity. This filter has an outer diameter of 76 mm, a length of 100 mm, and an M16 x 1.5 thread size. It is a direct replacement for various OEM part numbers including Caterpillar 1R0750, John Deere RE509031, Perkins 26560201, and Massey Ferguson 3621213M1, fitting a wide range of agricultural and construction machinery.