Solenoid Valve for Komatsu PC78 PC128 PC138 WA200 4D95 4D102 6D102
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Application | Compatible Models / Details |
|---|---|
| Komatsu Excavators | PC78, PC128, PC138 variants where the original solenoid matches |
| Komatsu Wheel Loaders | WA200 variants using the same solenoid configuration |
| Engine / Application References | 4D95, 4D102, 6D102 families as listed for the replacement |
Product Overview
Komatsu machines use multiple solenoid-operated valves for engine and hydraulic control, and several of them have similar external shapes. This replacement is sold for the listed PC/WA machine families, so positive identification should be based on the original solenoid's connector, thread/mounting and any stamped reference number rather than model name alone.
A failed solenoid valve can create a function that will not engage, shut off or respond correctly. Before replacement, confirm the coil receives the expected voltage and that the valve/plunger is not being held by contamination or a mechanical fault.
Key Features & Performance
- Application coverage includes Komatsu PC78, PC128, PC138 and WA200 families
- Associated listings reference 4D95, 4D102 and 6D102 engine/equipment applications
- Electrical valve actuation for compatible control circuit
- Part should be physically matched to the removed solenoid because Komatsu uses multiple valve types
Reference Numbers & Specifications
- Reference number(s): Verify stamped number on original solenoid; marketplace listings for this application do not consistently publish a single Komatsu reference
- Part type: electrical solenoid valve
- Application: engine/hydraulic control depending on machine configuration
- Connector and voltage: must match original unit
Before You Order
- Do not order only by engine model—compare the connector, valve body and mounting/thread arrangement.
- Use the machine serial number and the original stamped number whenever available.
Frequently Asked Questions
Why is there no single OE number in the title?
The matching marketplace listing identifies this unit by machine/engine application but does not consistently publish one verified Komatsu number. It is safer not to invent one.
What should I test before replacement?
Check command voltage, coil continuity/resistance and whether the controlled valve or linkage moves freely.
Compatibility can vary by engine, serial number and equipment configuration. Match the original part number and physical configuration whenever possible before ordering.