Komatsu's forklift line — FG20, FG25, and the H20 variant, all built around the K21 engine — uses a straightforward external gear pump to power mast lift, tilt, and side-shift functions. It's a simpler system than Komatsu's excavator hydraulics, and that simplicity is exactly why a properly unit performs as well as new: fewer precision-fit components to wear out of tolerance, and a well-documented rebuild procedure.
Komatsu Forklift Pump — Model by Model
| Forklift Model | Engine | Pump Part Family | Capacity Class | Price |
|---|---|---|---|---|
| FG20 / FG20-16 | K21 | 37B-1KA-3020 | 2.0 tonne | WhatsApp for price |
| FG25 / FG25-16 | K21 | 37B-1KA-5020 | 2.5 tonne | WhatsApp for price |
| H20 | K21 | 37B-1KA-3040 | 2.0 tonne | WhatsApp for price |
*Indicative prices. Actual prices vary by condition, availability and market. WhatsApp for current quote — confirm your exact part number from the pump housing before ordering, as Komatsu revised part numbers across production runs.
What Our Quality Process Covers
The primary wear component in any gear pump. New gears restore full volumetric efficiency at rated RPM.
Always replaced — the single most common external leak point on a Komatsu forklift pump.
Inspected for scoring or wear beyond spec, replaced or reworked as needed.
Renewed on every unit — no carry-forward seals.
Actual output measured and documented on the written test report before dispatch.
Why Warehouse & Yard Operators Choose PumpGrid
One Down Forklift Slows the Whole Yard
A Komatsu forklift out of service doesn't just affect one loading bay — it backs up receiving, dispatch, and everything scheduled around it. PumpGrid's 2-3 day dispatch keeps that disruption short.
Meaningful Savings on a Simple Component
Because the pump is a straightforward gear design, cost stays low — competitively priced, without any compromise on flow output.
Fleet Pricing for Multi-Forklift Operations
Warehouses and logistics operators running several Komatsu forklifts get volume pricing and stock reservation on repeat orders.
3-Month Warranty, Confirmed in Writing
If the pump fails due to a workmanship defect within warranty, we replace it — not repair it.
Komatsu Forklift Pump Warning Signs
If 2 or more of the above apply, the gear pump likely needs quality process. WhatsApp us the model and symptoms for a quick assessment.