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. C-CLASS (W202)
2. C-CLASS Saloon (W202)
3. E-CLASS (W210)
4. E-CLASS Saloon (W210)
5. 124 Saloon (W124)
6. VITO Bus (638)
7. C-CLASS T-Model (S202)
8. C-CLASS Break (S202)
9. E-CLASS T-Model (S210)
10. E-CLASS Break (S210)
11. SLK (R170)
12. V-CLASS (638/2)
13. CLK (C208)
14. SPRINTER 2-t Platform/Chassis (901, 902)
15. LT 28-35 II Bus (2DB, 2DE, 2DK)
16. LT Mk II Bus (2DB, 2DE, 2DK)
17. LT 28-46 II Van (2DA, 2DD, 2DH)
18. LT Mk II Van (2DA, 2DD, 2DH)
19. LT 28-46 II Platform/Chassis (2DC, 2DF, 2DG, 2DL, 2DM)
20. LT Mk II Platform/Chassis (2DC, 2DF, 2DG, 2DL, 2DM)
21. See more in applications

The principle of the thermostat work

The classic SASIC 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.