THERMOSTAT COOLANT FOR LEXUS 3GR-FSE 3.0L 4GR-FSE 2.5L 2GR-FSE/FXE 3.5L 6cyl GS BLUE PRINT ADT39221

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. IS II (_E2_)
2. IS II Saloon (_E2_)
3. GS (_L1_)
4. GS (_S19_)
5. GS Saloon (_S19_)
6. CROWN (CRS_, JZS_, GRS18_, UZS_)
7. MARK X I (GRX12_)
8. REIZ I (GRX12_)
9. IS C (GSE2_)
10. IS III (_E3_)
11. See more in applications

The principle of the thermostat work

The classic BLUE PRINT 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.