part 49106 O-Ring, Valve Retainer Cat Pumps code 49106 Details Cat Pumps number49106 DescriptionO-Ring, Valve Retainer Qty per pump1 Also comes in 31556 Kit, Repair31708 Kit, O-Ring (Includes: 414, 415, 424, 428-430 Fits these pumps Cat Pumps Plunger pumps 4 66DX30G1I66DX35G1I66DX40G1I66DX50G1I