... ,the following is our product engine models.Pls check. Our main products are as follows:Bushing,Con-Rod,Bearing,crankshaft,Camshaft,Piston ... ,Piston ring,Liner,Valve,Gasket Kits, Main valve, Service valve, Fan cooling etc...Engine parts,Body parts ... /T 30% in advance, 70% before shipment 6110-23-8010 main bearing Komatsu 4D120 4D130 engine bearing