Description Filter element for hydraulic lift pump, top mount. 2-7/16" O.D. 1-29/32" I.D. & 4" long. This item is a suitable alternative for the following: 521451M1, 185551M93, 516774M91, 520697M1, 521451M91, 185551M91, 884906M91, A521451M1, A-521451M1