... in original parts; 2. long working life; 3.Steering Valve; 4. Model 7-8 for Komatso; We are the ... PART FOR EXCAVATOR, HYDRAULIC BREAKER/ROCK HAMMER back head, cylinder, front head, inner bush, front cover, seal kits, ... bolt, rod pin, stop pin, piston, seal housing, valve, accumulator plug and so on. Our products can match for ... , SOCOMECT, NOAHTECH. KOMATSU EXCAVATOR MODEL 7-8 GENUINE CONTROL VALVE