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Product Details
| Quality | Rebuilt in Japan using a genuine core |
| Product Contents | – Power Steering Pump Assembly – Gaskets for High-Pressure Hose Connection – O-ring |
| SUBARU IMPREZA | Model: GDB Bugeye: Atype, Btype |
| Genuine Part Number | 34430FE031 34430FE032 |
| Year | 2001/08 |
| Applied Models | GDBB4EH |
| Engine | 2.0L EMPI DOHC |
| Mission | 6MT |
| Drive train | 4WD |
| Classification | 10747-0001 |
The images on this page are of actual rebuilt parts supplied by Auto Parts Box Japan.
We also offer an overhaul kit for this part.
- Reliability – Remanufactured in Japan using genuine/OEM cores.
- High Quality – Rigorous inspections and meticulous quality control.
- Durability – Providing consistent performance and peace of mind.
- Cost-Effective – Providing assured quality at a lower price compared to purchasing new parts, helping you save on your budget.
How to Check Compatibility
If you do not know the part number, please provide your vehicle’s chassis number, and we will help verify the compatible parts for your car.
Contact Us
Feel free to contact us with any questions or service requests.
How Rally, Autocross, and Hillclimb Driving Stress the Power Steering Pump
Frequent and Rapid Steering Input
- Continuous steering corrections:
Rally, autocross, and hillclimb events involve tight corners, slaloms, and quick transitions. Drivers often make rapid steering inputs to maintain control at high speed or to set up for the next obstacle.
This forces the power steering pump to operate at high pressure for extended periods, placing greater strain on the system compared to normal driving. - Quick countersteering and adjustments:
On loose surfaces (gravel, snow) or during sudden traction changes, countersteering and quick steering corrections are essential.
These sharp, high-frequency inputs generate momentary spikes in hydraulic load on both the pump and steering rack.
High Tire Grip Variations and Steering Kickback
- Uneven surfaces and lateral slip:
Rally and rallycross often take place on mixed or rough surfaces, while autocross and hillclimb are typically on tarmac. Sudden grip changes or side slip generate strong forces that kick back into the steering system. - Increased steering resistance:
During these motorsports, tires frequently operate at extreme slip angles or experience high grip conditions.
The power steering system must constantly overcome this resistance, demanding higher hydraulic pressure.
Fluid Overheating and Degradation
- Pump overheating:
Extended high-load operation, especially in low-speed technical sections, causes power steering fluid temperature to rise rapidly. - Fluid foaming (cavitation):
As temperature increases, fluid viscosity drops. Under heavy pump load, this can lead to cavitation, forming air bubbles within the fluid.
Since air is compressible, this results in unstable hydraulic pressure and may temporarily reduce steering assist. - Reservoir overflow:
Foaming can increase fluid volume, causing overflow from the reservoir.
If fluid comes into contact with hot engine components, it can pose a safety hazard.
Loss of fluid may also lead to pump starvation or even failure due to overheating.
Maintaining Your Power Steering System
High-performance driving inevitably puts extra stress on the power steering system of your Subaru Impreza.
To prevent unexpected pump failure, noise, or fluid leaks during competition, regular inspection and timely overhaul are essential.