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. FELICIA I (6U1)
2. FELICIA � (6U1)
3. POLO (6R1, 6C1)
4. POLO (6R1, 6C1, 601, 603)
5. ALTEA (5P1)
6. ALTEA XL (5P5, 5P8)
7. TRANSIT V363 Van (FCD, FDD)
8. TRANSIT V363 Platform/Chassis (FED, FFD)
9. TRANSIT V363 Platform/Chassis (VQ, FED, FFD)
10. PAJERO II (V3_W, V2_W, V4_W)
11. PAJERO II (V3_W, V2_W, V4_W, NH, NJ, NK, NL)
12. MONTERO � (V3_W, V2_W, V4_W)
13. PAJERO/SHOGUN Mk II (V3_W, V2_W, V4_W)
14. PAJERO SFX /SHOGUN II (V3_W, V2_W, V4_W)
15. PAJERO/SHOGUN II (V3_W, V2_W, V4_W)
16. MONTERO II (V3_W, V2_W, V4_W)
17. SHOGUN II (V3_W, V2_W, V4_W)
18. B-MAX (JK)
19. GOLF SPORTSVAN (AM1, AN1)
20. AYGO (_B4_)
21. See more in applications

The principle of the thermostat work

The classic MAGNETI MARELLI 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.