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3094204 Hydraulic Pump Wiring Harness for Hitachi Excavator EX100-2 EX120-2 EX200-2
Looking for part 3094204? This Hydraulic Pump Wiring Harness is made for Hitachi EX100-2, EX120-2, EX200-2 excavators and reproduces the original harness design, from wire lengths and branch points to the connector types on each end.
Function Overview
On electronically controlled hydraulic systems, pump output is constantly adjusted to match engine load and operator demand. All of that adjustment happens through the signals travelling along this harness, so its condition has a direct effect on digging power and fuel economy.
Positioned in the pump compartment, this harness is surrounded by heat, vibration and hydraulic oil. It feeds the pump's solenoid valves and returns pressure readings to the controller, which uses them to balance hydraulic power against engine output.
Hitachi ZAXIS and EX series machines combine electronic engine control with electronically managed hydraulics, so both systems depend on sound wiring to deliver their rated performance.
Questions Buyers Often Ask
Do I need special tools to install it?
Standard hand tools are usually enough. Labelling connectors and taking photos before removal makes the job much easier.
Can I replace only part of the harness?
For a reliable result we recommend replacing the complete harness, since the rest of the old wiring has aged under the same conditions.
Is this harness plug-and-play?
Yes. It is built to the original layout with matching connectors, so it installs in place of the original without cutting or splicing.
Installation Tips
- Relieve hydraulic pressure and let the system cool before working near the pump.
- Wipe oil residue off connectors before unplugging them.
- Check the pump solenoids and pressure sensors for damage while the harness is out.
- Secure the new harness away from hot hydraulic lines with the original clamps.
How to Verify Compatibility
Model names are not always enough to confirm fitment, because manufacturers sometimes change harness designs within a model's production run. Check the part number on your existing harness, or send us your machine model and serial number, and we will check it for you.
Signs Your Harness Needs Replacing
You may notice:
- Engine bogging down or stalling under heavy hydraulic load
- Higher fuel consumption than normal
- Oil-soaked or heat-damaged wiring around the pump
- Hydraulic functions feeling slow or weak
If these symptoms persist after checking fuses, batteries and grounds, the wiring itself is the next thing to suspect.
Built for Heavy-Duty Work
TOPARTS harnesses are made to the original layout so that every connector reaches its component without strain. Protective conduit and tape guard the wires against abrasion, heat and oil in the engine bay and around the frame.
Specifications
- Part Name: Hydraulic Pump Wiring Harness
- Part Number: 3094204
- Condition: Aftermarket new
- Product Weight: 2 kg / 4.41 lbs
- Brand: TOPARTS
- Feature: Matches original routing and length; durable, heat-resistant insulation
Application
Hitachi EX100-2 EX120-2 EX200-2
Payment & Shipping
- Payment Method: PayPal, Stripe, Credit card, Visa, etc.
- Shipping Method: DHL, FedEx, UPS, TNT, USPS EMS, etc.
- Track Your Order: An email containing the tracking number with a link will be sent to you as soon as it ships.
Note: Please verify your part number and match our product pictures to your original item before ordering. If you have any questions, please feel free to contact us. Thanks.
