THERMOSTAT COOLANT FOR DAIHATSU WILDCAT/ROCKY FOURTRAK TAFT SCAT F20 RUGGER 2.8L VALEO 820442

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. LAND CRUISER (_J6_)
2. WILDCAT/ROCKY (F70)
3. WILDCAT/ROCKY (F75)
4. ROCKY Soft Top (F7, F8)
5. FOURTRAK (F7, F8)
6. ROCKY Hard Top (F7, F8)
7. ROCKY Hard Top Hardtop, Wagon (F7, F8)
8. TAFT
9. SCAT
10. F20
11. LAND CRUISER Pickup (_J4_)
12. BANDEIRANTE Pickup (_J4_)
13. LAND CRUISER (_J4_, _J5_)
14. BANDEIRANTE SUV (_J4_, _J5_)
15. DYNA Platform/Chassis (_U_, _Y_)
16. DYNA Pickup
17. DYNA 200 Platform/Chassis
18. DYNA 300 Platform/Chassis
19. COASTER Bus (_B4_, _B5_)
20. DYNA 150 Platform/Chassis (LY_)
21. See more in applications

The principle of the thermostat work

The classic VALEO 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.