OEM Part Numbers

Technical Specifications

Product Description

This original used N373 valve is designed for 2nd and 3rd generation Haldex AWD systems. It is an electro-hydraulic control valve used inside the Haldex clutch assembly to regulate oil flow and support proper clutch control during all-wheel-drive operation. [web:191][web:193]

What This Valve Does

• Controls hydraulic oil flow inside the Haldex coupling
• Supports clutch engagement behaviour in the AWD system
• Helps maintain correct rear axle activation when required
• Contributes to stable operation of the Haldex control system
• Serves as a replacement for defective original N373 valves

Vehicle Compatibility

This valve is suitable for selected vehicles equipped with 2nd or 3rd generation Haldex coupling. Publicly available references confirm the part for Gen 2 / Gen 3 Haldex systems, but exact fitment should always be verified according to the original valve and AWD unit version. [web:191][web:193]

Suitable for Selected AWD Applications

Common Fault Codes & Symptoms

A defective N373 valve can contribute to poor AWD engagement, rear axle activation problems or Haldex malfunction symptoms. Similar issues may also be caused by pump faults, ECU defects, contaminated oil or internal hydraulic problems, so professional diagnosis is recommended before replacement. [web:193]

Installation & Service Notes

Recommended Steps

• Verify that the vehicle uses 2nd or 3rd generation Haldex
• Check the OEM number or physical type of the original N373 valve
• Inspect the Haldex unit for oil contamination or related hydraulic issues
• Install the replacement valve carefully in a clean working environment
• Check AWD operation after installation
• Perform diagnostic verification if faults were previously stored

Why the N373 Valve Matters

1. Oil Regulation

The valve helps regulate hydraulic oil control inside the Haldex clutch system.

2. Clutch Operation

It supports proper clutch engagement behaviour required for AWD activation.

3. Rear Axle Response

Correct valve operation helps the Haldex system transfer torque to the rear axle when needed.

4. System Stability

A properly functioning valve contributes to smoother and more reliable AWD operation.

Quality Assurance & Warranty

12-Month Warranty: This used original Haldex control valve is supplied with a 12-month functionality warranty under normal operating conditions.

Warranty Coverage Includes:

• Functional defects of the supplied valve
• Electrical or mechanical defects of the valve itself
• Material defects under normal use

Warranty Exclusions:

• Incorrect installation
• Damage caused by contaminated oil or neglected Haldex service
• AWD faults caused by pump, ECU, wiring or other unrelated components
• 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
• The exact Haldex generation is more important than model name alone
• 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