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. LAGUNA III (BT0/1)
2. LAGUNA III Grandtour (KT0/1)
3. LAGUNA III Sport Tourer (KT0/1)
4. LAGUNA III Sportour (KT0/1)
5. MAXIMA VII (A35)
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7. LATITUDE (L70_)
8. LAGUNA Coupe (DT0/1)
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14. ALTIMA Coupe (CL32)
15. PATHFINDER IV (R52)
16. PATHFINDER IV SUV (R52)
17. ALTIMA (L33)
18. QX60
19. QX60 SUV
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The principle of the thermostat work

The classic HERTH+BUSS JAKOPARTS 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.