This HPK055 hydraulic main pump assembly is matched with OEM reference numbers 9197338 and 9285566, designed for Hitachi ZX120, ZX130 series excavators including ZX120‑3, ZX130‑3, ZX130‑5A.

As the core power unit of the excavator hydraulic system, this pump delivers steady oil flow and pressure to support boom, arm, bucket, swing and travel functions. Strict quality control ensures excellent wear resistance and stable working performance, effectively solving common faults such as weak movement and hydraulic pressure loss.

It is a direct‑fit replacement for original factory pump, ideal for excavator overhaul and maintenance. We keep sufficient stock. Every pump is inspected before shipment to guarantee good working condition, support fast delivery.

✅ Part No.: 9197338 / 9285566

✅ Model: HPK055
✅ Fit: Hitachi ZX120, ZX130 (ZX120‑3, ZX130‑3, ZX130‑5A)
✅ Complete main pump assembly
✅ Stable hydraulic flow & pressure output
✅ High wear‑resistant material
✅ In stock, ready to ship