702-21-57400 Main Pump Solenoid Valve (24V) fits Komatsu PC200-7, PC220-7, also PC200-8, PC210-7/8, PC240-7/8, PC300-7/8, PC360-7/8. 24V DC hydraulic proportional pilot solenoid (7022157400) for main pump control. Precision valve core and heavy‑duty coil deliver fast, stable hydraulic regulation. Robust steel housing with durable sealing resists dust, oil and corrosion in harsh worksites. Exact OEM dimensions enable direct replacement, minimizing downtime.