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. MX-5 I (NA)
2. MX-5 � (NA)
3. MX-5 / ROADSTER I (NA)
4. MX-5 / MIATA I (NA)
5. MIATA I (NA)
6. SPORTAGE SUV (K00)
7. SPORTAGE I SUV (K00)
8. 626 IV (GE)
9. 626 IV Saloon (GE)
10. 626 Mk IV (GE)
11. CRONOS / TELSTAR IV (GE)
12. CAPELLA IV (GE)
13. TELSTAR IV (GE)
14. ROCSTA
15. ROCSTA Closed Off-Road Vehicle
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The principle of the thermostat work

The classic JAPANPARTS 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.