2W8147 Gear-Crankshaft Fits Caterpillar AP-1000 AP-1000B AP-1000D AP-1050 MTC755One New Aftermarket Replacement Crankshaft Gear that Fits Caterpillar Models: AP 1000, AP 1000B, AP 1000D, AP 1050, MTC755, AP 1050B, AP 1055B, AP 1055D, AP 755, AP 900B, BG 240C, BG 2455C, BG 2455D, BG 245C, BG 260C, BG 260D, 446B, 446D, 35, 45, 55, MT735, MTC745, MTC765, PM 102, 816F II, 815B, 815F II, CB 634C, CB 634D, CP 533C, CP 533D, CP 563, CP 563C, CP 563D, CS 531C, CS 531D, CS 533C, CS 533D, CS 563, CS 563C, CS 563D, CS 573C, CS 573D, CS