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The G4-91 solenoid repair kit is engineered to restore functionality and performance of high-pressure pump control valves in Caterpillar systems. It supports G4-91 Caterpillar 320D pump solenoid repair kit for
high pressure pump, diesel pump solenoid valve rebuild solution for CAT 320D injector systems, and precision solenoid restoration kit for fuel pump calibration equipment. Manufactured with durable components
and tight tolerances, it integrates efficiently with diesel high pressure pump test bench systems, enabling accurate validation after repair and ensuring stable operation.
This kit improves reliability by replacing worn internal components that affect fuel metering and response time. It is commonly referenced in technical resources such as CAT 320D pump solenoid repair procedure blog,
where proper rebuilding techniques are essential for maintaining system efficiency. Its robust design supports long-term use in demanding maintenance and diagnostic environments.





| Parameter | Specification |
|---|---|
| Product Name | G4-91 Solenoid Repair Kit |
| Application | Caterpillar 320D High Pressure Pump |
| Function | Solenoid Valve Repair & Rebuild |
| Compatible Equipment | CAT 320D Diesel Engine Systems |
| Material | High-grade Alloy / Engineering Plastics |
| Component Type | Internal Solenoid Parts Kit |
| Installation | Manual Repair / Replacement |
| Operating Medium | Diesel Fuel |
| Temperature Range | -30°C to +150°C |
| Durability | High wear resistance |
| Precision | OEM-level tolerance |
| Compatibility | High-pressure fuel pump systems |
| Application Scenario | Maintenance / Repair / Calibration |
| Service Life | Extended operational lifespan |
| Packaging | Complete Repair Kit Set |



