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. NP300 PICKUP (D22)
2. NAVARA PICKUP (D22)
3. NP300 NAVARA (D40)
4. NAVARA Pickup (D40)
5. FRONTIER (D40)
6. CAMIONES / FRONTIER (D40)
7. FRONTIER / NP300 (D40)
8. NAVARA (D40)
9. GALANT V Saloon (E5_A, E7_A, E8_A)
10. GALANT Mk V Saloon (E5_A, E7_A, E8_A)
11. ETERNA V Saloon (E5_A, E7_A, E8_A)
12. GALANT V (E5_A, E7_A, E8_A)
13. GALANT V (E5_A, E7_A, E8_A, HJ)
14. GALANT Mk V (E5_A, E7_A, E8_A)
15. ix55
16. VERACRUZ
17. CELICA Coupe (_T20_)
18. PAJERO II (V3_W, V2_W, V4_W)
19. PAJERO II (V3_W, V2_W, V4_W, NH, NJ, NK, NL)
20. MONTERO � (V3_W, V2_W, V4_W)
21. See more in applications

The principle of the thermostat work

The classic MAHLE ORIGINAL 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.