LR043939 | Turbo Air Recirculation Shut-Off Valve - 3.0D V6 | Discovery 4
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To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: LR043939 - Right-Hand Turbo Air Recirculation Shut-Off Valve
LR043939 is a right-hand turbo air recirculation shut-off valve fitted to the right-hand turbocharger air recirculation circuit on 3.0D V6 diesel engines. The valve controls compressed air recirculation within the turbocharger system, closing to isolate the recirculation path when sealed boost flow is required and opening to provide pressure relief when exhaust or boost conditions demand it. It influences turbocharger airflow routing and transient response on later 3.0 V6 diesel vehicles; during service, check the routing of vacuum or actuator hoses and ensure the valve seating is free from carbon or soot that can prevent full closure.
Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Discovery 4 (2010-2016) - 3.0D V6 - From VIN CA639817
- Range Rover Sport L320 - 3.0D V6 - From VIN DA769755
Frequently Asked Questions
The LR043939 shut-off valve isolates or opens the recirculation passage on the right-hand turbocharger circuit to control compressed air flow - sealing the boost flow when required and allowing pressure relief when necessary. Common issues include carbon or soot build-up that prevents full closure and incorrect or damaged vacuum/actuator hoses. Inspect the valve seating and actuator connections during turbocharger service and replace the valve if it fails to seal or operates intermittently.
| Model | Variant |
|---|---|
| Land Rover Discovery 4 | 2010-2016 - 3.0D V6 (From VIN CA639817) |
| Land Rover Range Rover Sport L320 | 3.0D V6 (From VIN DA769755) |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
Inspect the LR043939 during routine turbocharger or engine services and replace it if the valve sticks, leaks, or the seating is damaged or contaminated by carbon so it cannot seal properly. If in doubt, consult the vehicle service manual or a qualified technician.
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