Wix Filters 51163 Hydraulic Filter Cartridge Assembly

The Wix Filters 51163 is a cartridge-style hydraulic filter in a metal canister designed for full-flow filtration in heavy-duty hydraulic systems and transmission assemblies, with OEM equivalents including Caterpillar 1R0719 and Donaldson P559740. It measures 9.25 inches in height, 4.00 inches outer diameter, and 2.30 inches inner diameter, uses enhanced cellulose filtration media at a 23-micron nominal rating, and features a Beta ratio of 2/20 = 10/24, installed as a cartridge canister. In service, it protects hydraulic components by removing contaminants in Caterpillar earthmoving equipment, Komatsu construction machinery, Timberjack forestry equipment, and other industrial hydraulic systems requiring clean fluid for pump efficiency and valve performance; cross references include NAPA Gold 1163, with OEM references Caterpillar 1R0719, 1208757, Donaldson P559740, Fleetguard HF6097, and common replacements Baldwin PT9555.