Haldex AWD Booster Pump Seal Kit – Generation 4 | OEM 0AY598305
The Haldex Gen 4 AWD system uses a booster pump to pre-charge coupling oil pressure. When the pump seals wear, oil pressure drops before engagement — causing delayed or inconsistent AWD activation. This seal kit replaces all pump seals, restoring correct booster pump operation.
Fits OEM #0AY598305.
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
- Repair components supplied for this SKU and shown in the product photos; no complete surrounding assembly is included
Important Limitations
Inspect the pump housing, electrical motor, and coupling system before installation. Damage outside the service components is not corrected by the kit.
Part Number / PN
0AY598305, 31256757, 0BS598549, 0AY598549, 0AY598549A, 22765779, 1589740, 9V4N4C019AA, LR008958, LR075763
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 0AY598305 is the primary fitment check.
FAQ
How do I confirm fitment for this Haldex AWD Booster Pump Seal Kit?
Compare the exact OEM/P/N and physical design with the installed part. The primary reference is 0AY598305. Do not select the part by vehicle model alone.
What symptoms may indicate a problem with this Haldex AWD Booster Pump Seal Kit?
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 Booster Pump Seal Kit?
The confirmed kit contents are: Repair components supplied for this SKU and shown in the product photos; no complete surrounding assembly is included.
Does this listing include the complete surrounding assembly?
Inspect the pump housing, electrical motor, and coupling system before installation. Damage outside the service components is not corrected by the kit.
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.
Read All
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