System Type
Haldex AWD 1st Generation
Condition
New Fully Functional
Manufacturer
BorgWarner
Component
Oil Filter
Package Includes
1x Oil Filter
Warranty
24 Months
Tested & Ready for Installation
This original Haldex oil filter is a direct replacement for OEM reference 02D525558A, designed to maintain clean hydraulic oil flow and protect internal Haldex components in 1st generation AWD systems.
OEM Part Numbers
Main OEM Number:
02D525558A • 02D 525 558 A
Related Reference Numbers:
DS120359
Always Verify Your Part Number
Before placing an order, check the OEM number on your existing Haldex filter or service parts list and confirm it matches 02D525558A. 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:
Haldex Coupling Oil Filter
Application:
Volkswagen Group AWD vehicles with 1st Gen Haldex coupling
Reference Number:
DS120359
Recommended Oil:
G052175A1
Warranty Period:
24 Months
Product Description
This original 02D525558A Haldex oil filter is designed for 1st generation Haldex AWD systems used across a wide range of VAG vehicles. The filter removes impurities and metal particles from the hydraulic oil, helping maintain smooth operation of the AWD system and protecting the internal components of the Haldex coupling.
What This Filter Does
- Filters impurities and metal particles from Haldex oil
- Protects the Haldex pump and clutch unit from premature wear
- Helps maintain correct hydraulic oil flow inside the AWD coupling
- Supports reliable AWD performance during regular service intervals
Service Recommendation
This filter is recommended to be replaced during every Haldex oil service. For best results, replace the filter together with fresh Haldex oil G052175A1.
Vehicle Compatibility
The 02D525558A filter 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
- VW Golf IV (1998 - 2004)
- VW Bora / Jetta (1998 - 2004)
- VW Sharan (1998 - 2008)
- VW Beetle RSi (2001 - 2003)
- SEAT Leon (1998 - 2005)
- SEAT Alhambra (1998 - 2008)
- Škoda Octavia I (1998 - 2004)
- Audi A3 / S3 (8L) (1998 - 2003)
- Audi TT (8N) (1998 - 2006)
Not Sure About Compatibility?
If you are unsure whether this filter fits your vehicle, send us your VIN number or the OEM number from your existing filter. We will help confirm compatibility before you order.
Common Fault Codes & Symptoms
A clogged or neglected Haldex oil filter can reduce oil flow, overload the pump, and contribute to AWD performance issues. Common service-related symptoms and warning signs include:
-
Blocked filter gauze Restricted oil flow inside the Haldex coupling
-
Reduced rear-wheel drive Weak or delayed rear axle engagement
-
P16671 Pump-related Haldex fault
-
P16670 Pump-related Haldex fault
-
P16668 Pump-related Haldex fault
- Loss of power to the rear wheels
- Reduced traction and grip in slippery conditions
- Increased pump wear caused by contaminated oil and filter restriction
Diagnostic Tip
If the AWD system shows reduced rear-wheel-drive performance or pump-related faults, one common cause can be restricted oil flow from a clogged Haldex filter. Replacing the filter together with fresh oil is an important part of Gen 1 Haldex servicing.
Installation & Service Notes
Recommended Steps
- Verify the exact OEM number on the original Haldex filter
- Replace the filter during every Haldex oil service
- Use fresh original 1st generation Haldex oil G052175A1
- Inspect the Haldex housing for contaminated oil or debris during service
- Check the condition of the pump and oil passages if AWD issues are present
- Verify correct AWD operation after servicing the Haldex unit
Important Service Note
A dirty or blocked Haldex filter can overload the pump and shorten its service life. For reliable AWD operation, replace the filter and oil together as part of routine maintenance.
Why Haldex Filters Matter
1. Oil Cleanliness
The filter captures contaminants and metal particles that would otherwise circulate inside the Haldex coupling.
2. Pump Protection
A clean filter helps maintain correct oil flow and prevents unnecessary strain on the Haldex pump.
3. AWD Performance
Proper filtration supports stable hydraulic pressure and reliable rear-wheel-drive engagement.
4. Preventive Maintenance
Replacing the filter during scheduled Haldex service helps extend the life of the pump and clutch unit.
Quality Assurance & Warranty
24-Month Warranty: This new original Haldex oil filter is supplied with a 24-month functionality warranty under normal operating conditions.
Warranty Coverage Includes:
- Manufacturing defects of the supplied filter
- Material defects under normal use
- Functional defects of the replacement unit
Warranty Exclusions:
- Incorrect installation
- Use with contaminated or incorrect oil
- Damage caused by neglected Haldex servicing
- 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 together with the filter during service
- Please check if this product fits your car before purchase
