The Donaldson P584001 is an older reference for the Donaldson P550750 spin-on fuel filter, designed for effective fuel filtration in heavy-duty applications. This filter serves as a direct replacement for Caterpillar part number 1R0750. It features an outer diameter of 93 mm, a length of 175 mm, and a thread size of M16 x 1.5. This fuel filter is commonly used in a wide range of Caterpillar machinery, including 320C, 320D, 322C, 325C, 330C, 330D excavators; 924G, 928G, 930G, 938G, 950G, 962G wheel loaders; 120H, 135H, 140H, 143H, 160H, 163H motor graders; D5N, D6N track-type tractors; and 561N pipelayers, as well as Caterpillar 3116, 3126, C7, and C9 engines.