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. SWIFT IV (FZ, NZ)
2. SWIFT MK V (FZ, NZ)
3. SWIFT III (FZ, NZ)
4. COMBO Mk II (C) Box Body/MPV (F25)
5. AGILA (A) (H00)
6. CORSA C (X01)
7. VITA C (X01)
8. IGNIS II (MH)
9. WAGON R+ Hatchback (MM)
10. WAGON R SORIO Hatchback (MM)
11. WAGON R+ MPV (MM)
12. CORSA Mk II (C) (X01)
13. CORSAVAN Mk II (C) Hatchback Van (X01)
14. TIGRA TwinTop (X04)
15. COMBO Tour
16. CORSA C Hatchback Van (X01)
17. COMBO Box Body/MPV
18. SWIFT III (MZ, EZ)
19. MERIVA A MPV (X03)
20. MERIVA Mk I (A) (X03)
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The principle of the thermostat work

The classic BorgWarner (Wahler) 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.