Engine Bearing, Gear, Piston manufacturer / supplier in China, offering Komatsu 6D108 Crankshaft Main Bearing 6221-31-3040, For Komatsu 6D105 Con Rod Bearing 6136-21-8000 - Heavy-Duty for Mining Equipment, Komatsu 6D105 Main Bearing 6136-21-8000 - Heavy-Duty for Mining Equipment and so on.