HENGYUHANG Plunger Pump 121-4312 / 0R-7686 – Perfect Replacement for CAT Hydraulic Plunger Pump
The CAT hydraulic plunger pump is an essential component in high-pressure hydraulic systems for construction, mining, and industrial machinery. CAT hydraulic plunger pumps are well known for stable output and durability, but their high cost and long lead time often increase equipment operating expenses.
The HENGYUHANG plunger pump 121-4312 / 0R-7686 is engineered as a perfect replacement for CAT hydraulic plunger pump, delivering OEM-level compatibility, stable hydraulic performance, and excellent cost efficiency. This HENGYUHANG plunger pump can directly replace CAT part number 121-4312 and CAT reman number 0R-7686 without any modification.
Functions of HENGYUHANG Plunger Pump 121-4312 / 0R-7686
As a reliable replacement for CAT hydraulic plunger pump, the HENGYUHANG plunger pump 121-4312 / 0R-7686 provides:
Continuous high-pressure hydraulic oil supply
Stable and accurate flow output
Efficient power transmission
Low internal leakage
Reliable operation under high-load conditions
| Parameter | Specification |
|---|---|
| Product Type | Axial Hydraulic Plunger Pump |
| Replacement For | CAT Hydraulic Plunger Pump |
| CAT Part Number | 121-4312 |
| CAT Reman Number | 0R-7686 |
| 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 Testing | 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 to operate reliably in demanding environments.
The CAT hydraulic plunger pump offers several key advantages:
Proven durability and reliability
Stable pressure and flow performance
Long service life
Strong global brand reputation
These advantages make CAT hydraulic plunger pumps a preferred OEM choice.
Despite its strengths, the CAT hydraulic plunger pump has certain disadvantages:
High purchase and replacement cost
Expensive maintenance and spare parts
Long delivery lead times
High total cost of ownership
These limitations encourage users to seek a dependable replacement for CAT hydraulic plunger pump.
The HENGYUHANG plunger pump 121-4312 / 0R-7686 provides clear advantages:
Manufactured according to CAT specifications, the HENGYUHANG plunger pump ensures perfect fit and easy installation.
It delivers equivalent performance to the CAT hydraulic plunger pump at a more competitive price.
Advanced machining and strict quality control guarantee long-term stable operation.
Shorter lead times help minimize equipment downtime.
Each HENGYUHANG plunger pump is fully tested before shipment.
Choosing the HENGYUHANG plunger pump 121-4312 / 0R-7686 means choosing a high-quality and economical replacement for CAT hydraulic plunger pump. It maintains hydraulic system performance while reducing overall operating costs.
The HENGYUHANG plunger pump 121-4312 / 0R-7686 is a reliable and cost-effective alternative to the CAT hydraulic plunger pump. With OEM compatibility, stable performance, and competitive pricing, it is an ideal solution for construction, mining, and industrial hydraulic applications.
For customers seeking a proven replacement for CAT hydraulic plunger pump, the HENGYUHANG plunger pump 121-4312 / 0R-7686 is the smart choice.

No. 173, Xiacuo, Sihuang Village, Xiamei Town, Nan 'an City, Fujian Province



