This Donaldson hydraulic filter is made for reliability, this spin-on filter includes a bypass valve for added protection. Synthetic media, 50-micron rating (Beta 1000), 5.32 inch diameter, 6.90 inch length, ensures optimal hydraulic performance. Thread: 1 3/4-16 UN. Gasket: 4.35 inch outside diameter, 3.94 inch inside diameter.