LAND ROVER DISCOVERY 1 1994 - 1999 / RANGE ROVER CLASSIC COOLANT OVERFLOW RESERVOIR BOTTLE TANK PART# PCF101590 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 DISCOVERY1 94-99 / RANGE ROVER CLASSIC 1990-1995 BLACK RADIATOR COOLANT OVERFLOW RESERVOIR BOTTLE TANK NEW OEM BRITPART PART # ESR63 PART#1 ON PICTURE Part No: PCF101590 Brand: BRITPART-PREMIUM UK BRAND Description: Expansion Tank Assembly . Cap not included Recommended Quantity: 1 Dimensions: 0.02 m x 0.19 m x 0.27 m Weight: 0.85 kilo Supersedes: ESR63 DEFENDER (NOT NAS) 200Tdi 1990 - 1995 DEFENDER (NOT NAS) 300Tdi 1994 - 1999 DISCOVERY 1 200Tdi 1989 - 1994 DISCOVERY 1 300Tdi 1994 - 1999 DISCOVERY 1 V8 1989 - 1999 3.5 Efi 3.9 RANGE ROVER CLASSIC 200Tdi 1992 - 1994 Replaces Metal or Plastic RANGE ROVER CLASSIC 300Tdi 1994 - 1995 RANGE ROVER CLASSIC V8 1990 - 1995 Replaces Metal or Plastic RANGE ROVER CLASSIC VM Diesel 1990 - 1992 Replaces Metal or Plastic