Thermostat is a device for maintaining a static (constant) temperature, as its name implies. There are thermostats of different designs in many devices and mechanisms, from water heaters to refrigerators. There is also a thermostat in a car's internal combustion engine (liquid-cooled, of course). In a car, the thermostat regulates the temperature of the coolant (antifreeze): it accelerates the warm-up of a cold engine and provides heat removal from the hot one. Therefore, the engine works more efficiently and more comfortably for the driver, especially in winter - without a thermostat, the stove would usually blew cold air.

1. MICRA IV (K13_)
2. MARCH IV (K13_)
3. MARCH / MARCH ACTIVE IV (K13_)
4. MICRA IV (K13_, MK13K_)
5. H-1 / STAREX Bus (A1)
6. H200 Bus (A1)
7. SATELLITE Bus (A1)
8. STAREX I Bus (A1)
9. STAREX Bus (A1)
10. QASHQAI / QASHQAI +2 I (J10, NJ10, JJ10E)
11. DUALIS I (J10, NJ10, JJ10E)
12. LATITUDE (L70_)
13. FLUENCE (L3_)
14. MEGANE III Grandtour (KZ0/1)
15. GRAN TOUR III Grandtour (KZ0/1)
16. SORENTO I (JC)
17. MEGANE III Hatchback (BZ0/1_, B3_)
18. MICRA C+C III (K12)
19. MARCH III (K12)
20. MICRA III (K12)
21. See more in applications

The principle of the thermostat work

The classic MAHLE ORIGINAL brand Thermostat, coolant is a movable valve that moves due to a change in the external environment - heating or cooling of antifreeze. The thermostat is made of a thermoelement filled with a substance resembling wax in structure - ceresin, with the addition of copper powder, graphite or aluminum for better thermal conductivity. At a certain temperature of the antifreeze, ceresin expands, opening the thermostat valve. When the motor cools down, ceresin contracts and the thermostat closes again.