4536857 | Exhaust Gas Recirculation Valve - 4.4 AJ-V8 | Discovery 3, Range Rover L322
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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: 4536857 - Exhaust Gas Recirculation Valve
4536857 is an Exhaust Gas Recirculation Valve fitted to the exhaust gas recirculation system on 4.4 AJ-V8 engines. The valve meters a controlled amount of exhaust gas back into the engine intake to reduce peak combustion temperatures and lower NOx emissions, modulating flow according to engine load and speed; a sticking or failed valve can cause altered idle, increased combustion temperatures or diagnostic trouble codes.
Use the compatibility data below to confirm fitment against your V.I.N.
This component is designed for the 4.4 AJ-V8 application and is fitted to Discovery 3 and Range Rover models with that engine. Replacement should match the original part number to maintain expected exhaust gas recirculation behaviour and compatibility with the engine management system.
Compatibility
- Discovery 3 - 4.4 AJ-V8
- Range Rover L322 - 4.4 AJ-V8
- Range Rover Sport L320 - 4.4 AJ-V8
Frequently Asked Questions
The 4536857 EGR valve meters exhaust gas back into the intake to reduce peak combustion temperatures and lower NOx emissions, adjusting flow with engine load and speed. If the valve sticks or fails the engine may show altered idle, higher combustion temperatures or trigger diagnostic trouble codes, which typically indicate the valve requires attention or replacement.
| Model | Variant |
|---|---|
| Land Rover Discovery 3 | 4.4 AJ-V8 |
| Land Rover Range Rover L322 | 4.4 AJ-V8 |
| Land Rover Range Rover Sport L320 | 4.4 AJ-V8 |
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 EGR valve during routine servicing and replace it if it sticks, causes altered idle or higher combustion temperatures, or triggers diagnostic fault codes; consult the vehicle handbook or a technician if unsure.
- L8 products are genuine Land Rover parts.
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