HENGYUHANG Plunger Pump 350-0666 / 20R-4693 – Perfect Replacement for CAT Hydraulic Plunger Pump
The CAT hydraulic plunger pump is an essential component in high-pressure hydraulic systems used in construction, mining, and industrial machinery. CAT hydraulic plunger pumps are known for their stable performance and durability, but high costs and long delivery times often increase the total operating expense.
The HENGYUHANG plunger pump 350-0666 / 20R-4693 is engineered as a perfect replacement for CAT hydraulic plunger pump, offering OEM-level compatibility, reliable performance, and clear cost advantages. This HENGYUHANG plunger pump can directly replace CAT part number 350-0666 and CAT reman number 20R-4693 without any modification.
Functions of HENGYUHANG Plunger Pump 350-0666 / 20R-4693
As a dependable replacement for CAT hydraulic plunger pump, the HENGYUHANG plunger pump 350-0666 / 20R-4693 provides:
Continuous high-pressure hydraulic oil delivery
Stable and accurate flow control
Efficient power transmission
Low internal leakage
Reliable operation in harsh environments
| Parameter | Specification |
|---|---|
| Product Type | Axial Hydraulic Plunger Pump |
| Replacement For | CAT Hydraulic Plunger Pump |
| CAT Part Number | 350-0666 |
| CAT Reman Number | 20R-4693 |
| Rated Pressure | Up to 35 MPa |
| Maximum Pressure | Up to 40 MPa |
| Flow Performance | High efficiency, stable output |
| Operating Speed | OEM standard |
| Working Medium | Hydraulic Oil |
| Operating Temperature | -20°C to +90°C |
| Installation Method | Direct replacement |
| Mounting Interface | Fully compatible with CAT systems |
| Quality Inspection | 100% pressure and performance tested |
Both the CAT hydraulic plunger pump and HENGYUHANG plunger pump are widely used in:
Construction machinery
Mining equipment
Industrial hydraulic systems
Earthmoving machinery
Agricultural equipment
Heavy-duty mobile machinery
The HENGYUHANG plunger pump is designed for stable operation in demanding working conditions.
The CAT hydraulic plunger pump offers several advantages:
Proven durability and long service life
Stable pressure and flow output
Reliable performance in heavy-duty applications
Strong global brand recognition
These advantages make CAT hydraulic plunger pumps a trusted OEM choice.
Despite its strengths, the CAT hydraulic plunger pump also has limitations:
High purchase and replacement costs
Expensive original spare parts
Long lead times
Higher total cost of ownership
These disadvantages encourage users to look for a reliable replacement for CAT hydraulic plunger pump.
The HENGYUHANG plunger pump 350-0666 / 20R-4693 offers clear advantages:
Manufactured according to CAT specifications, the HENGYUHANG plunger pump ensures direct installation and perfect fit.
It delivers equivalent performance to CAT hydraulic plunger pumps at a more competitive price.
Precision machining and strict quality control ensure stable pressure and long-term reliability.
Shorter lead times help minimize equipment downtime.
Each HENGYUHANG plunger pump is fully tested before shipment.
Choosing the HENGYUHANG plunger pump 350-0666 / 20R-4693 means choosing a dependable and economical replacement for CAT hydraulic plunger pump. It helps maintain system performance while significantly reducing operating costs.
The HENGYUHANG plunger pump 350-0666 / 20R-4693 is a high-quality alternative to the CAT hydraulic plunger pump. With OEM compatibility, stable performance, and cost advantages, it is an ideal solution for construction, mining, and industrial hydraulic systems.
For customers seeking a proven replacement for CAT hydraulic plunger pump, the HENGYUHANG plunger pump 350-0666 / 20R-4693 is the smart and reliable choice.

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