... .PC50 MR-2 MAIN PUMP for excavator2.Application:komatsu3.Engine: PC504.Factory supplied/wholesaler5.Good quality, favorable price, ... manufactuer: many kinds of excavator spare parts for different brands: KOMATSU, KOBELCO,CATERPILLAR, HITACHI, SUMITOMO, KATO, DAEWOO, HYUNDAI, VOLVO ... kits, ARM BOOM BUCKET seal kits, O-ring kits, engine liner kits, cylinder heads, cylinder blocks, crankshafts, camshafts, ...