The Donaldson P551434F2 is a high-quality spin-on fuel filter designed to provide superior protection for diesel engines. Featuring 2 micron efficiency at 99%, this filter effectively removes contaminants, ensuring clean fuel delivery and optimal engine performance. It has an outer diameter of 78 mm, a length of 135 mm, and an M16 x 1.5 thread size. This genuine Donaldson filter is a direct replacement for many OEM part numbers, including Caterpillar 1R0750, John Deere RE509031, and Perkins 26560163, making it suitable for a wide range of agricultural, construction, and industrial machinery.