System Type Haldex AWD 1st Generation
Condition New Fully Functional
Manufacturer BorgWarner
Component Pre-Charge Pump
Package Includes Pump + 2 Screws
Warranty 24 Months
Tested & Ready for Installation This new original BorgWarner Haldex pump is a replacement for OEM reference 02D525557, designed to restore the hydraulic pressure needed for rear-wheel-drive engagement in Gen 1 Haldex systems.
OEM Part Numbers
Main OEM Number:
02D525557 • 02D 525 557
Related Reference Numbers:
118574 • T118574 • DS118574
Always Verify Your Part Number Before placing an order, check the OEM number printed directly on your existing Haldex pump and confirm it matches 02D525557. If you are unsure about compatibility, contact us with your VIN number and we will help verify fitment.
Technical Specifications
System Type:
Haldex AWD 1st Generation
Component:
Pre-Charge Pump / AWD Coupling Oil Pump
Application:
Volkswagen Group AWD vehicles with 1st Gen Haldex coupling
Manufacturer:
Original BorgWarner
Reference Number:
118574 / T118574 / DS118574
Included:
1x pump + 2x screws M5 x 25
Recommended Oil:
G052175A1
Warranty Period:
12 Months
Product Description
This new original BorgWarner Haldex pump with part number 02D525557 is designed for 1st generation Haldex AWD systems used across a wide range of VAG vehicles. The pump creates the hydraulic pressure required to activate the AWD clutch pack and engage rear-wheel drive when traction is needed.
What This Pump Does
- Builds hydraulic pressure for Haldex clutch engagement
- Restores rear-wheel drive activation in AWD conditions
- Supports correct operation of the AWD coupling and factory electronics
- Helps eliminate traction loss caused by a weak, blocked, or failed pump
Service Recommendation When replacing a Gen 1 Haldex pump, we strongly recommend using fresh Haldex oil G052175A1 and replacing the filter 02D525558A at the same time for reliable AWD operation.
Vehicle Compatibility
The 02D525557 pump is suitable for selected Volkswagen Group vehicles equipped with 1st generation Haldex AWD. Always verify the exact OEM part number before ordering.
Suitable for the Following Vehicle Models
- Audi A3 / S3 8L (1996 - 2003)
- Audi TT 8N (1998 - 2006)
- VW Beetle (1997 - 2010)
- VW Golf IV 4Motion (1997 - 2006)
- VW Jetta 4 / Bora (1998 - 2005)
- VW Sharan 1 (1995 - 2010)
- Škoda Octavia 1 (1996 - 2010)
- SEAT Alhambra 7M (1996 - 2010)
- SEAT Leon 1M (1998 - 2005)
Not Sure About Compatibility? If you are unsure whether this pump fits your vehicle, send us your VIN number or the OEM number from your existing pump. We will help confirm compatibility before you order.
Common Fault Codes & Symptoms
A faulty Gen 1 Haldex pump can cause AWD engagement problems, low hydraulic pressure and traction issues. Common pump-related symptoms and diagnostic signs include:
-
P16671 Pump-related Haldex fault
-
P16670 Pump-related Haldex fault
-
P16668 Pump-related Haldex fault
-
Blocked filter gauze Restricted oil flow inside the Haldex unit
-
Complete pump failure Rear-wheel drive does not engage correctly
- Loss of power to the rear wheels
- Reduced traction and grip in slippery conditions
- Improper AWD operation caused by worn pump or contaminated oil pathways
Diagnostic Tip If the AWD system does not engage properly and the vehicle shows loss of rear-wheel drive or pump-related fault codes, one common cause is reduced hydraulic pressure from a worn or failed Haldex pump. On some Gen 1 systems, the new pump may require the appropriate learn procedure with suitable diagnostic equipment after installation.
Installation & Service Notes
Recommended Steps
- Verify the exact OEM number on the original Haldex pump
- Replace the hydraulic pump according to the correct repair procedure
- Use fresh original 1st generation Haldex oil G052175A1
- Replace the filter 02D525558A during pump replacement
- Check the AWD system for stored faults after installation
- Verify proper rear axle engagement after service
Important Service Note A worn filter or contaminated oil can overload the new pump and shorten its service life. For reliable repair, replace the oil and filter together with the pump.
Why Haldex Pumps Fail
1. Internal Pump Wear
Gen 1 pumps can wear internally and lose the ability to create the oil pressure needed for clutch engagement.
2. Contaminated or Old Haldex Oil
Old oil increases wear inside the pump and reduces the performance of the AWD coupling.
3. Blocked Filter Gauze
A restricted filter reduces oil flow and can overload the pump, causing weak AWD operation or pump failure.
4. Ignored AWD Fault Symptoms
Continuing to drive with AWD warning symptoms can lead to worsening traction performance and additional drivetrain wear.
Quality Assurance & Warranty
12-Month Warranty: This new BorgWarner Haldex pump is supplied with a 12-month functionality warranty under normal operating conditions.
Warranty Coverage Includes:
- Pump motor malfunction
- Internal functional failure of the replacement unit
- Operational defects under normal use
Warranty Exclusions:
- Incorrect installation
- Failure to replace contaminated oil or blocked filter
- External wiring or control module faults
- Physical damage or misuse
Questions or Need Help?
Our technical team is ready to assist with compatibility checks, installation guidance and product selection.
Contact
Important Purchase Information
- Please verify this part fits your specific vehicle before placing an order
- Photos are for illustrative purposes only
- Worldwide shipping is available
- If your country is not listed at checkout, contact us and the order can be processed manually
- We recommend changing the Haldex oil and filter when replacing the pump
- Please check if this product fits your car before purchase
