LR023080 Coolant Reservoir Bottle & Cap Kit Range Rover L322

The cooling system on the Range Rover L322 (2006 to 2009) is a pressurized, sealed circuit that depends on a functioning expansion tank to manage thermal expansion and maintain the correct coolant level as the engine cycles through operating temperatures. When the original reservoir bottle cracks, leaks, or develops a faulty internal float, the result is often a persistent "Check Coolant Level" warning on the dashboard even when the coolant level appears normal. This kit addresses that problem directly by pairing a fresh reservoir bottle (LR023080) with a new pressure cap (PCD500030), giving you both the tank and the cap in a single purchase so you can restore the cooling system to full working order without hunting down two parts separately.

The LR023080 bottle is a direct-fit replacement for the factory expansion tank and includes the integrated coolant low-level sensor and bleeder screw. The internal float mechanism within the tank is the component most commonly responsible for triggering false low-coolant warnings on L322 Rovers of this generation, and replacing the complete bottle rather than attempting to service the float internally is the standard and most reliable fix. The PCD500030 cap seals the system to the correct pressure specification, preventing coolant loss and ensuring proper system function across the full operating temperature range.

Fits:

• Range Rover L322 (2006 to 2009) 4.4-liter AJ-V8 Petrol/Gas
• Range Rover L322 (2006 to 2009) 4.2-liter AJ-V8 Supercharged Petrol/Gas

Part Number: LR023080/PCD500030

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FAQ

What is included in this kit and do I need any other parts to complete the job?

This kit includes the LR023080 expansion tank bottle, which comes with the integrated coolant low-level sensor and bleeder screw, and the PCD500030 pressure cap. Together these two parts make up the complete expansion tank assembly. No additional reservoir hardware is required for the replacement.

My Range Rover keeps showing a "Check Coolant Level" warning but the coolant level looks fine. Will this fix it?

This is one of the most common complaints on L322 Rovers of this generation and is almost always caused by the internal float inside the expansion tank losing buoyancy over time rather than an actual low coolant condition. Replacing the complete bottle with this kit resolves the issue in the vast majority of cases. If the warning persists after replacement, the low-level sensor circuit and wiring should be inspected as a secondary step.

Is this kit compatible with all Range Rover L322 engine variants for 2006 to 2009?

Yes. The LR023080 bottle and PCD500030 cap have confirmed fitment across the 4.4-liter AJ-V8 petrol/gas, the 4.2-liter AJ-V8 Supercharged petrol/gas. Always verify against your VIN if you are uncertain about your specific build specification.