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. RX (_L1_)
2. LS (_F1_)
3. LS Saloon (_F1_)
4. LS (_F2_)
5. LS Saloon (_F2_)
6. AURIS (_E15_)
7. COROLLA (_E15_)
8. BLADE (_E15_)
9. ALLION II (_T26_)
10. ALPHARD / VELLFIRE (_H2_)
11. COROLLA Saloon (_E15_)
12. COROLLA Saloon (_E15_, _E14_)
13. ALTIS Saloon (_E15_)
14. COROLLA ALTIS Saloon (_E14_, _E15_)
15. COROLLA Saloon (_E14_, _E15_)
16. COROLLA ALTIS Saloon (_E14_, _E15_)
17. COROLLA / COROLLA QUEST Saloon (_E15_)
18. COROLLA Estate (_E14_)
19. FIELDER Estate (_E14_)
20. COROLLA RUMION (_E15_)
21. See more in applications

The principle of the thermostat work

The classic BLUE PRINT 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.