GEN 4 Haldex Pump Replacement For Quattro Audi VW 0AY598549A

GEN 4 Haldex Pump Replacement — Audi, VW Quattro AWD — 0AY598549A / DS119866

The BorgWarner DS119866 is the Generation 4 pre-charge pump kit for the Haldex AWD rear differential coupling, fitted across Audi and VW group vehicles with Quattro or 4MOTION all-wheel drive. This is the genuine OEM pump used as original equipment on Generation 4 Haldex-equipped vehicles.

Parts Included

• Genuine Haldex Gen 4 pump
• Associated seals and hardware

Part Numbers

BorgWarner: DS119866
VAG: 09N 525 554 A / 0AY 525 554 B / 0AY 525 554 D / 0AY598549A / 0BR 525 554 A / 0BS 525 554 B / 0BS 525 554 C / 0BY 525 554 A / 2K0 525 554 A

Vehicle Compatibility

• Audi A1, A3, Q3, TT — Quattro AWD models with Gen 4 Haldex
• SEAT Alhambra, Altea 4x4
• Skoda Superb 4x4, Yeti 4x4
• VW Caddy 4Motion, CC 4Motion, Golf 4Motion, Multivan 4Motion, Passat 4Motion, Sharan 4Motion, Tiguan 4Motion, Transporter 4Motion

Note: due to crossover OE suppliers on Haldex parts, you may receive items in a BorgWarner or S-Tec box. Both are brand new genuine parts.

Frequently Asked Questions

How do I identify if I have a Gen 3 or Gen 4 Haldex system?

The Generation 4 system is distinguished by its integrated electronic control and can be confirmed by the Haldex unit part number or the vehicle model year. As a general guide, vehicles from approximately 2006 onward with Haldex AWD use the Gen 4 unit — but confirm via your VIN or Eco Torque.

What causes the Gen 4 Haldex pump to fail?

The most common cause is lack of servicing — old Haldex oil with degraded additives fails to protect the pump and clutch pack. Pump failure leads to loss of AWD engagement and eventual Haldex unit failure.

Should I replace the oil and filter at the same time?

Yes, always service the Haldex oil and filter when replacing the pump. Contaminated oil will shorten the life of the new pump significantly.

Is 0AY598549A and DS119866 the same part?

Yes. 0AY598549A is the VAG OE reference and DS119866 is the BorgWarner OEM part number for the same Generation 4 pump.

Does this pump need coding or adaptation after fitting?

No programming is required. A Haldex adaptation reset using VCDS, OBD11, or equivalent VAG diagnostic tool is advisable after fitting.

Why Choose Eco Torque?

As specialists in gearbox rebuilds and repairs, Eco Torque takes pride in offering genuine gearbox parts, high-quality aftermarket alternatives and competitive pricing.

Need Help Finding the Right Part?

If you are unsure whether this part is compatible with your vehicle, send us your UK registration number or VIN and we will help you find the correct part.

Reference Number: ET2262