WA380-8 Hydraulic Pump Assembly — Komatsu Wheel Loader
Looking for a Hydraulic Pump Assembly for the WA380-8 Komatsu Wheel Loader? You are in the right place. Send us your machine serial and the parts desk confirms fitment, condition and price — we normally answer within one business day. Pump and valve decide how the machine answers the joystick. A rebuilt assembly costs less than the original and behaves the same.
Call to help verify fitment and always confirm the part number before ordering.
Pricing & availability
This part is quoted individually — new, rebuilt and used options are often available.
OEM — Factory part, full warranty, exact fitment to the machine serial.
Fits these machines
Partial list from OEM application data. Send us your model and serial and we will confirm the fit.
- Komatsu WA380-82020–2026V50001 – presentSerial range
Specifications
| Specifications | Value |
|---|---|
| OEM part number | 21B-30-31100 |
| Machine | WA380-8 (2020–2026) |
| Serial range | V50001 – present |
| Part category | Hydraulic Pumps & Valves |
Fitment guarantee
If it does not fit, we make it right — fast.
Fast order processing
Most orders ship within 1–2 business days.
Real parts people
Call, text or chat with a parts expert.
Core return
Rebuilt core with a return label and a 30-day credit.