part 49560 Crankshaft, 1/2", (6.3 mm) 1CX050R Cat Pumps code 49560 Details Cat Pumps number49560 DescriptionCrankshaft, 1/2", (6.3 mm) 1CX050R Qty per pump1 Fits these pumps Cat Pumps 1CX 3 1CX013R1CX025R1CX050R