Premium main pump solenoid valve replacement for Komatsu PC60-5 and PC120-5 excavators, identified by OEM part numbers SD1169-24-11 and 203-60-565180. This solenoid manages flow and pressure output from the main hydraulic pump to match operational demands. Features high-grade coil winding for reliable 24V actuation, precision-machined spool, and sealed housing protecting against hydraulic fluid contamination. Replaces failed pump solenoids to restore full flow and responsiveness. Compatible with PC60-5 and PC120-5 — verify variant for serial number range. Direct bolt-on installation.