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. MONTEGO Estate (XE)
2. MONTEGO Break (XE)
3. PAJERO I Canvas Top (L04_G)
4. MONTERO � Canvas Top (L04_G)
5. PAJERO/SHOGUN Mk II Canvas Top (L04_G)
6. PAJERO/SHOGUN I Canvas Top (L04_G)
7. RX-7 I (SA)
8. RX-7 � (SA)
9. RX-7 II (FC)
10. RX-7 Mk II (FC)
11. SAVANNA RX-7 / RX 7 II (FC)
12. SUNNY I (B11)
13. SUNNY I Saloon (B11)
14. SENTRA I (B11)
15. SUNNY � (B11)
16. TSURU / HIKARI I (B11)
17. SUNNY I Traveller (B11)
18. PULSAR I Traveller (B11)
19. SUNNY I Break (B11)
20. SUNNY � Traveller (B11)
21. See more in applications

The principle of the thermostat work

The classic MAHLE 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.