part 14759 O-Ring, Piston Stem Cat Pumps code 14759 Details Cat Pumps number14759 DescriptionO-Ring, Piston Stem Qty per pump1 Also comes in 31555 Kit, O-Ring (Includes: 172, 415, 436)76860 Kit, Repair (Includes: 412, 415, 436, 437) Fits these pumps Cat Pumps 1CX 3 1CX013R1CX025R1CX050R