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. SX4 Saloon (GY, RW)
2. NEO BALENO Saloon (GY, RW)
3. SX4 (EY, GY)
4. SX4 / SX4 CLASSIC (EY, GY)
5. SX4 MONOCAB (EY, GY)
6. SEDICI (FY_)
7. CIVIC I Hatchback (SB)
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11. CIVIC � Saloon (SF)
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13. CIVIC MK II Hatchback (SS, SL)
14. CIVIC II Estate (WC)
15. CIVIC MK II Estate (WC)
16. NSX I Coupe (NA)
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19. ESCUDO (ET, TA, TD)
20. VITARA Cabrio (ET, TA)
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.