Land Rover Defender ABS Valve Block & Motor Assembly Repair – WABCO
From January 1st, 2026, we will be strictly Trade Only for New Zealand Info here
Price Exclusive of GST
Our minimum assessment fee is $150 + GST (Excluding Headlights) this just covers the time to check the unit over. If you go ahead with the repair, we’ll put this towards the total cost. Our full terms of trade is the link can be found here
International Customers:
When sending a unit from overseas, please declare it as “Repair and Return” with a low customs value (around $100 USD) to avoid unnecessary import fees. - All Repair Prices are quoted in NZD
Land Rover Defender ABS Valve Block & Motor Assembly Repair – WABCO
Part No. 478 407 022 0 / SRB 500041 03 007839
This is a repair service for the WABCO ABS valve block and motor assembly fitted to Land Rover Defender models. These units are known to develop a range of hydraulic and electrical faults that affect braking performance and may trigger ABS warnings or failure modes.
Common Faults We Repair:
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Blocked solenoid valves (causing uneven braking or warning lights)
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Motor failure (ABS pump not activating or low pressure faults)
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Internal or external fluid leaks (from seals or pressure chamber)
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Shuttle valve switch failure (a common cause of the “Three Amigos” warning lights)
Applies To:
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Land Rover Defender (various models equipped with WABCO ABS)
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WABCO Part Number:
478 407 022 0 -
Land Rover SRB Number: SRB
500041 03 007839
Service Includes:
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Disassembly and ultrasonic cleaning of valve block
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Motor function testing and repair/replacement if needed
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Resealing and replacement of worn seals
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Shuttle valve and sensor circuit repair
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Final bench testing for flow, pressure, and electrical integrity
Turnaround Time: 2–4 business days
Warranty: 12 months on all repaired components
💡 Restore reliable ABS performance and avoid the high cost of full replacement.