The Donaldson P550300 is a high-quality spin-on fuel filter designed to provide superior protection for diesel engines. This filter features an outer diameter of 93 mm, a length of 142 mm, and a thread size of M16 x 1.5. It offers 99% efficiency at 4 microns (Beta 4=200), ensuring clean fuel delivery and optimal engine performance. It is a direct replacement for various OEM part numbers, including Caterpillar 1R0750 and John Deere RE509031, fitting a wide range of agricultural and construction machinery.