Hydraulic HST Travel Pump for PC WA320-5 WA320-6 Wheel Loader Part No.419-18-31104

New aftermarket hydraulic HST travel pump 419-18-31104 for Komatsu WA320-5 / WA320-6 wheel loaders. This is a closed-circuit variable-displacement axial piston pump in the A4VG125 configuration (nameplate model A4VG125DA2DM2/32R-NSF02F07IDC-S), featuring electro-hydraulic proportional control with dual proportional solenoids.

Compatible replacement for the hydrostatic transmission travel pump. Compatibility is verified against machine serial number and original pump nameplate before dispatch.

• Variable displacement axial piston pump, designed for excavator main-hydraulic duty.
• Complete assembly supplied with pressure and flow regulator valves; ready for installation after connecting hydraulic lines.
• Flange-mounted drive interface to the engine flywheel housing.
• Remanufactured option: disassembled, cleaned, seals and wear parts replaced where applicable, matched and bench-tested. Please confirm the exact reconditioning steps performed for your order.
• New aftermarket option: manufactured to the same mounting and interface dimensions as the referenced original part; confirm interchangeability by part number.
• Oil-sealed and anti-rust packed before shipment; nameplate and test photos available on request.

The models and part numbers below are cross-reference data collected from the parts market for buyer matching. They are not a guarantee of direct fitment. Final compatibility depends on the exact part number and suffix on the pump nameplate, the regulator type (hydraulic vs. electronic), the flange bolt pattern, and the spline.

1. Nameplate photo — clearly showing the part number and suffix.
2. Old pump part number — as marked on the original unit.
3. Photos of the old pump — side view and mounting flange view.

We will confirm the matching part before shipping.