Haldex AWD Coupling Filter – Generation 1 | VAG | OEM 02D525558A
The Haldex Gen 1 coupling filter must be replaced at regular service intervals. A clogged filter reduces oil pressure to the coupling pump — causing delayed or absent rear wheel engagement and AWD fault codes. Direct replacement filter for VAG Gen 1 Haldex systems.
Fits OEM #02D525558A.
When to Inspect This Part
- all-wheel-drive warning or fault
- rear axle engagement is delayed or absent
- binding or vibration during low-speed turns
- pump or pressure-related Haldex fault
What's Included
- 1 × Haldex AWD Coupling Filter
OEM Part Numbers and Vehicle Fitment
Additional confirmed fitment
- Audi A3 S3 8L Quattro 1998, 1999, 2000, 2001, 2002, 2003
- Audi TT 8N Quattro 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
- VW Bora 2.8 V6 4motion 1998, 1999, 2000, 2001, 2002, 2004
- VW Golf 1J Mk4 R32 4Motion 1998, 1999, 2000, 2001, 2002, 2003, 2004
- VW Sharan 7M Phase 1 Mk1 1998, 1999, 2000,2001, 2002, 2003, 2004, 2005, 2006, 2007
- VW New Beetle RSi 1998, 1999, 2000, 2001, 2002, 2003
- Skoda Octavia 1U 4×4 Mk1 1998, 1999, 2000, 2001, 2002, 2004
- Seat Leon 1M Mk1 Cupra4 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
- Seat Alhambra 7M 1998, 1999, 2000,2001, 2002, 2003, 2004, 2005, 2006, 2007
Part Number / PN
02D525558A
Important Fitment Check
Before ordering, compare the part design, dimensions, connectors, and every available OEM/P/N marking with the part installed on the vehicle. Matching OEM/P/N 02D525558A is the primary fitment check.
FAQ
How do I confirm fitment for this Haldex AWD Coupling Filter?
Compare the exact OEM/P/N and physical design with the installed part. The primary reference is 02D525558A. Do not select the part by vehicle model alone.
What symptoms may indicate a problem with this Haldex AWD Coupling Filter?
Confirmed symptoms include all-wheel-drive warning or fault, rear axle engagement is delayed or absent, binding or vibration during low-speed turns, pump or pressure-related Haldex fault. Diagnose the original assembly before ordering so another fault is not mistaken for this part.
What is included with this Haldex AWD Coupling Filter?
The confirmed kit contents are: 1 × Haldex AWD Coupling Filter.
Does this listing include the complete surrounding assembly?
No. It includes only the item or repair components identified for this SKU. Inspect related parts separately and replace them only when diagnosis confirms a fault.
What should be checked before installation?
Check the OEM/P/N, dimensions, connectors, orientation, and condition of the mating components. Installation should follow the correct service procedure for the specific vehicle and assembly.
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Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings