LAND ROVER LR3 / DISCOVERY 3 COOLANT OVERFLOW RESERVOIR BOTTLE TANK WITH CAP PART: LR020367 & PCD500030 / PCD000090 How do I know if my radiator overflow bottle needs to be replaced? Since radiator overflow bottles are plastic, theyre usually replaced due to cracks. Wild temperature swings (think cold winter day and high temp engine coolant) can cause the bottle to split at its seams. Another common reason for replacement is broken mounting tabs or hose outlets from debris or other repair work. If you pour coolant in and can see it running out, chances are the bottle needs to be replaced. Can I replace a radiator overflow tank myself? Yes! Make sure to wait until the car has cooled down first, though. In most vehicles, installation is as simple as disconnecting the coolant hose, unbolting any mounting hardware, and swapping it out with a new one. On some models, there may also be a coolant level sensor in the tank that will need to be removed from the old bottle and inserted into the new one. LAND ROVER LR3 / DISCOVERY 3 2005-2009 RADIATOR COOLANT OVERFLOW RESERVOIR BOTTLE TANK WITH CAP COMPLETE NEW OEM BRITPART PART # LR020367 & PCD500030 Part No: LR020367 TANK INCLUDES RESERVOIR CAP, COOLANT LOW LEVEL SENSOR AND BLEEDER SCREW Brand: BRITPART-PREMIUM UK BRAND Description: Expansion Tank Assembly Recommended Quantity: 1 Dimensions: 0.02 m x 0.19 m x 0.27 m Weight: 0.85 kilo Fits: LR3 / Discovery 3 | '05 - '09 | Includes low coolant sensor LR4 / Discovery 4 | '10 - On Range Rover Sport | '06 - '09 Range Rover Sport Supercharged | '06 - '09 Range Rover Sport | '10 - '13 Range Rover Sport Supercharged | '10 - '13