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. LAND CRUISER PRADO (_J15_)
2. LAND CRUISER (_J7_)
3. CAREVACA (_J7_)
4. LAND CRUISER PRADO (_J7_)
5. LAND CRUISER Hardtop (_J7_)
6. LAND CRUISER FRP Top (_J7_)
7. 4 RUNNER (_N1_)
8. SW4 (_N1_)
9. HILUX SURF (_N1_)
10. SURF (_N1_)
11. LAND CRUISER 90 (_J9_)
12. LAND CRUISER PRADO (_J9_)
13. LAND CRUISER COLORADO (_J9_)
14. MERU (_J9_)
15. GRANDEUR (TG)
16. GRANDEUR Saloon (TG)
17. AZERA (TG)
18. GRANDEUR IV (TG)
19. GENESIS (BH)
20. GENESIS (BH, S4_)
21. See more in applications

The principle of the thermostat work

The classic MAGNETI MARELLI 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.