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. 508 I (8D_)
2. 508 SW I (8E_)
3. C5 III (RD_)
4. C5 III Saloon (RD_)
5. C5 III Break (RW_)
6. PHEDRA (179_)
7. S-MAX (WA6)
8. MONDEO IV (BA7)
9. MONDEO IV Turnier (BA7)
10. ULYSSE (179_)
11. RANGE ROVER EVOQUE (L538)
12. RANGE ROVER EVOQUE SUV (L538)
13. GALAXY (WA6)
14. 607 (9D, 9U)
15. 607 Saloon (9D, 9U)
16. 407 (6D_)
17. 407 Saloon (6D_)
18. 407 SW (6E_)
19. C5 II (RC_)
20. C5 II Break (RE_)
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The principle of the thermostat work

The classic MAXGEAR 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.