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. GIULIA (105_)
2. GIULIA Saloon (105_)
3. SPIDER (105_)
4. SVX (CX)
5. ALCYONE SVX (CX)
6. IMPREZA Saloon (GC)
7. GEMINI (JT)
8. WRANGLER I (YJ, SJ_)
9. WRANGLER � (YJ, SJ_)
10. CHEROKEE (XJ)
11. WAGONEER (XJ)
12. CHEROKEE SUV (XJ)
13. GRAND CHEROKEE I (ZJ, ZG)
14. GRAND CHEROKEE � (ZJ, ZG)
15. GRAND CHEROKEE I SUV (ZJ, ZG)
16. MINI
17. WRANGLER II (TJ)
18. WRANGLER / TJ II (TJ)
19. WRANGLER Mk II (TJ)
20. 124 (124_)
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.