Thermostat, coolant - 352317101990 MAGNETI MARELLI

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 II (BG0/1_)
2. LAGUNA II Grandtour (KG0/1_)
3. LAGUNA II Sport Tourer (KG0/1_)
4. ESPACE IV (JK0/1_)
5. ESPACE Mk IV (JK0/1_)
6. MEGANE II (BM0/1_, CM0/1_)
7. MEGANE II Estate (KM0/1_)
8. MEGANE II Grandtour (KM0/1_)
9. MEGANE II Sport Tourer (KM0/1_)
10. MEGANE II Coupe-Cabriolet (EM0/1_)
11. SCENIC II (JM0/1_)
12. VEL SATIS (BJ0_)
13. TRAFIC II Bus (JL)
14. TRAFIC II Van (FL)
15. TRAFIC Van (FL)
16. TRAFIC II Platform/Chassis (EL)
17. TRAFIC II Rodeo (EL)
18. VIVARO A Bus (X83)
19. VIVARO A Van (X83)
20. PRIMASTAR Bus (X83)
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.