OEM Part Numbers

Technical Specifications

Product Description

This new aftermarket Haldex pre-charge pump with OEM references 31256757 / LR008958 / 9V4N-4C019-AA is designed for 4th generation Haldex AWD systems used across selected Volvo, Ford and Land Rover vehicles. The pump creates the hydraulic pressure required to activate the AWD clutch pack and engage rear-wheel drive when traction is needed.

What This Pump Does

• Builds hydraulic pressure for Haldex clutch engagement
• Restores rear-wheel drive activation in AWD conditions
• Supports correct operation of the AWD coupling and factory electronics
• Helps eliminate traction loss caused by a weak, blocked, or failed pump

Vehicle Compatibility

The 31256757 / LR008958 / 9V4N-4C019-AA pump is suitable for selected Volvo, Ford and Land Rover vehicles equipped with 4th generation Haldex AWD. Always verify the exact OEM part number before ordering.

Suitable for the Following Vehicle Models

Common Fault Codes & Symptoms

A faulty Gen 4 Haldex pump can cause AWD engagement problems, pump electrical faults and traction issues. Common pump-related symptoms and diagnostic codes include:

Installation & Service Notes

Recommended Steps

• Verify the exact OEM number on the original Haldex pump
• Replace the hydraulic pump according to the correct repair procedure
• Replace the Haldex filter and oil at the same time
• Check the pump wiring and connector if electrical faults are present
• Clear stored AWD fault codes after installation
• Verify proper AWD operation after service

Why Haldex Pumps Fail

1. Internal Wear

Gen 4 pumps can wear internally and lose the ability to create the oil pressure needed for clutch engagement.

2. Clogged Filter

A restricted filter forces the pump to work harder until it overheats or burns out.

3. Contaminated or Old Haldex Oil

Old oil increases wear inside the pump and reduces the performance of the AWD coupling.

4. Ignored AWD Fault Codes

Continuing to drive with AWD fault codes or warning symptoms can lead to worsening traction performance and additional system wear.

Quality Assurance & Warranty

12-Month Warranty: This new Haldex pump is supplied with a 12-month functionality warranty under normal operating conditions.

Warranty Coverage Includes:

• Pump motor malfunction
• Internal functional failure of the replacement unit
• Operational defects under normal use

Warranty Exclusions:

• Incorrect installation
• Failure to replace contaminated oil or clogged filter
• External wiring or control module faults
• Physical damage or misuse

Questions or Need Help?

Our technical team is ready to assist with compatibility checks, installation guidance and product selection.

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 replacing the Haldex filter and oil when replacing the pump
• Please check if this product fits your car before purchase