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 C Coupe
2. 100 (C1)
3. 100 Saloon (C1)
4. REKORD D
5. 100 (43, C2)
6. 100 Saloon (43, C2)
7. 5000 (43, C2)
8. 500 (43, C2)
9. REKORD D Estate
10. COMMODORE B Coupe
11. COMMODORE B
12. SENATOR A (29_)
13. MANTA A (58_, 59_)
14. MANTA B (58_, 59_)
15. 100 Avant (43, C2)
16. GOLF I (17)
17. RABBIT I (17)
18. GOLF � (17)
19. CARIBE I (17)
20. K 70 (48)
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.