THERMOSTAT COOLANT FOR BMW 3/E0/E6/5/E4/7/E2/Convertible/E46 Z1/Roadster 2.0L MEYLE 028 271 0005

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. 3 (E30)
2. 3 Saloon (E30)
3. 3 Touring (E30)
4. 3 (E36)
5. 3 Saloon (E36)
6. 5 (E12)
7. 5 Saloon (E12)
8. 5 (E28)
9. 5 Saloon (E28)
10. 5 (E34)
11. 5 Saloon (E34)
12. 6 (E24)
13. 7 (E23)
14. 7 Saloon (E23)
15. 7 (E32)
16. 7 Saloon (E32)
17. Z1 Roadster
18. 3 Convertible (E30)
19. 3 (E46)
20. 3 Saloon (E46)
21. See more in applications

The principle of the thermostat work

The classic MEYLE 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.