Fits the following Cooper S models:
2002-2006 R53 MINI Cooper S Hatchbacks
2005-2008 R52 MINI Cooper S Convertibles
For the Cooper replacement expansion tank, see NME7662.
Don't risk corrosive chemicals spilling all over your engine. If your radiator expansion tank is cracked and 'weeping' fluid, replace it immediately with this genuine replacement.
New tank includes a new cap.
The stock BMW MINI Cooper S radiator expansion tank is easy to replace. White/cream color, the MINI Cooper S cooling system expansion tank is mounted on the firewall of the engine compartment. The cooling system expansion tank is where you fill the radiator with coolant.
For the Cooper Cap, see NME7674.
For the Cooper S Cap, see NME7664.
For a listing of all Cooling System replacement parts, click here.
CAUTION: NEVER open the expansion tank cap when the engine is hot!! Wait until the engine is cool to the touch.
For 2002-2006 R50 MINI Cooper and R53 Coooper S Hardtops, and 2005-2008 R52 MINI Cooper and Cooper S Convertibles.
Thermostat begins to open at 89-92° C (192° F - 198° F) and is fully open at 103° C (217° F).
Expansion Tank Cap Cap pressurizes the system to 1.1 bar (16 psi) at which point the cap valve will lift to relieve pressure.
Radiator Fan is a nine bladed fan measuring 400mm in diameter, driven by a 350 watt motor controlled by the EMS2000.
Low speed is switched on at 105°C (221° F) coolant temp and off when the temperature drops to 101°C (214° F).
High speed is switched on at 112° C (234° F) and remains on until the system coolant temperature drops by 4° C (39° F) at which point the system will revert to Low Speed.
The cooling fan will also operate on Low Speed when the Air Conditioning is switched on and system pressure reaches 8 bar (116 psi). Should the Air Conditioning system pressure rise to 18 bar (261 psi), the fan will automatically run on the High Speed.