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. LANCER IV Hatchback (C6_A, C7_A)
2. LANCER IV Hatchback (C6_A, C7_A, CA, CB)
3. LANCER Mk IV Hatchback (C6_A, C7_A)
4. L 300 III Van (P0_V, P1_V, P_2V)
5. EXPRESS III Van (SF, SG, SH, SJ, WA, P0_V, P1_V, P_2V)
6. DELICA III Van (P0_V, P1_V, P_2V)
7. PAJERO II Canvas Top (V2_W, V4_W)
8. MONTERO � Canvas Top (V2_W, V4_W)
9. PAJERO/SHOGUN � Canvas Top (V2_W, V4_W)
10. PAJERO/SHOGUN II Canvas Top (V2_W, V4_W)
11. SHOGUN II Canvas Top (V2_W, V4_W)
12. MONTERO II Canvas Top (V2_W, V4_W)
13. PAJERO II (V3_W, V2_W, V4_W)
14. PAJERO II (V3_W, V2_W, V4_W, NH, NJ, NK, NL)
15. MONTERO � (V3_W, V2_W, V4_W)
16. PAJERO/SHOGUN Mk II (V3_W, V2_W, V4_W)
17. PAJERO SFX /SHOGUN II (V3_W, V2_W, V4_W)
18. PAJERO/SHOGUN II (V3_W, V2_W, V4_W)
19. MONTERO II (V3_W, V2_W, V4_W)
20. SHOGUN II (V3_W, V2_W, V4_W)
21. See more in applications

The principle of the thermostat work

The classic BorgWarner (Wahler) 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.