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. KADETT B
2. RALLYE B
3. KADETT B Coupe
4. KADETT B Estate
5. KADETT C City
6. KADETT C
7. K 180 C
8. KADETT C Coupe
9. KADETT C Estate
10. KADETT D (31_-34_, 41_-44_)
11. KADETT D Estate (35_, 36_, 45_, 46_)
12. ASCONA B (81_, 86_, 87_, 88_)
13. 50 (86)
14. 80 (80, 82, B1)
15. FOX Saloon (80, 82, B1)
16. FOX (80, 82, B1)
17. GT
18. OPEL
19. MANTA B CC (53_, 55_)
20. MANTA B Hatchback (53_, 55_)
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.