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-7 I (SA)
2. RX-7 � (SA)
3. RX-7 II (FC)
4. RX-7 Mk II (FC)
5. SAVANNA RX-7 / RX 7 II (FC)
6. BLUEBIRD (910)
7. BLUEBIRD Saloon (910)
8. BLUEBIRD (U11)
9. BLUEBIRD Saloon (U11)
10. BLUEBIRD Station Wagon (WU11)
11. BLUEBIRD Break (WU11)
12. BLUEBIRD (T72 , T12, U12)
13. BLUEBIRD Hatchback (T72, T12)
14. TERRANO II (R20)
15. MISTRAL (R20)
16. PATROL III/1 Station Wagon (W160)
17. PATROL III/1 Station Wagon (W160, MK, MQ)
18. PATROL III/1 Hardtop (K160)
19. PATROL III/1 Hardtop (K160, MK, MQ)
20. SAFARI III/1 Hardtop (K160)
21. See more in applications

The principle of the thermostat work

The classic VALEO 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.