The Donaldson P550188 is a high-quality spin-on fuel filter designed for optimal fuel system protection. Featuring a 10-micron cellulose media, this full-flow filter effectively removes contaminants to ensure clean fuel delivery and extend engine life. It is engineered with an M16 x 1.5 thread and has an outer diameter of 93 mm and a length of 142 mm. This genuine Donaldson filter is a direct replacement for various OEM part numbers, including Caterpillar 1R0750 and John Deere RE509031, fitting a wide range of agricultural and construction equipment.