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Engine thermostat for automobile

Spare: Coolant thermostat original

Information - Engine thermostat

The thermostat is needed in order to regulate the amount of coolant that passes through the radiator. This ensures an optimal temperature mode for the whole system. This item is located in a hose between the radiator and the cooling jacket of the engine. Cars with powerful engines are provided with thermostat with electric heater, which enables a two-step temperature control of the coolant. In order to ensure that, there are three working positions in the construction of this item. When the engine is submitted to full load, the electric heater ensures a total opening of the thermostat. At the same time, the coolant temperature drops to 90 ° C, and decreases the possibility of engine knock. Usually, the coolant temperature holds within 105 ° C.

The thermostat itself is made of brass. To the bottom of the thermostat housing there is a weld bellows (sylphon) with an auxiliary valve and a hollow shaft with a main valve. Fabricated in the form of a cylindrical sylphon made of thin brass, the thermostat bellows is filled with a mixture of water and ethanol, which gets easily heated and boiled. When the water temperature is below 70 ° C, inside the bellows there is a low pressure of saturated liquid vapors, as it gets compressed under the pressure of the elastic corrugated walls.

Apart from that, the main valve is fully closed, and the auxiliary one - open. Moving in s short circuit, the water bypasses the radiator. Under the pressure of the evaporating liquid and at a water temperature above 70 ° C, the sleeve gets stretched, the spindle and the valves are put forward, which allows the water to enter the radiator through the opened main valve. When the water temperature exceeds 85 ° C, the auxiliary valve closes the side openings and cuts the access of water from the thermostat to the water pump.

If you have detected a problem with your thermostat, you need to check or replace the faulty part in a repair shop or garage. In order to avoid additional expenses for any part, for example radiator, brake hose or expansion valve, order it in our online store, and then replace it. This way you will save precious time and money.

What you need to know about thermostat replacement: lifetime limits, common defects and their signs, tips and recommendations

Averagely, replacement of the cooling radiator thermostat is performed every 4 years of exploitation or after 100 000 operational kilometers. If the component stops working correctly earlier, it also should be replaced. In most cases the cooling system thermostat breaks down because of valve jamming as a result of soiling, corrosion.

The fact that the antifreeze thermostat needs diagnostics is characterized by engine overheating or, vice versa, its inability to reach the working temperature and keep it. Engine overcooling is characterized by increased fuel consumption and lowering of heater operational efficiency in the passenger compartment. In case of overheating the appropriate indicator on the dashboard activates. You can also notice appearance of smoke from under the bonnet and scent of cooling liquid in the cabin. Similar signs can characterize defects of the oil radiator thermostat if it is included in car construction.

Diagnostics of the cooling liquid thermostat can be performed without its demounting. For this you need to start the cool engine and wait 2 minutes, then check the cooling liquid hose going from the thermostat to the radiator. This time is not sufficient for valve activation, thus the hose must be cold. In case if the pipe of the car thermostat gets warm at once or doesn’t get warm at all after a while, then the component needs replacement.

In order to replace the component you should drain antifreeze into the prepared tank after the engine cools down, remove hoses from pipes of the car thermostat. Then unscrew fixation nuts and remove the cap. Remove the defective component, install a new one, set the cap, apply greasing material to it, tighten fixations and fill cooling liquid. Replacement of the thermostat sealing ring is performed together with the thermostat itself. Sometimes replacement of the thermostat body in assembly is required. Moreover, the replacement procedure sometimes takes demounting of the radiator, fan viscous coupling or other components. That is why it is better to contact a service station for thermostat replacement.

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Engine thermostat at low cost: Top Spares

Engine thermostat 88°C, with seal, Synthetic Material Housing (RIDEX, 316T0004)
-15%
original Engine thermostat RIDEX 316T0004
Article №: 316T0004
RIDEX Engine thermostat 316T0004
£ 21,49**
£ 18,27
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 88
  • Supplementary Article/Supplementary Info: with seal
  • Housing Type: Synthetic Material Housing
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 87°C, without housing (RIDEX, 316T0002)
-15%
original Engine thermostat RIDEX 316T0002
Article №: 316T0002
RIDEX Engine thermostat 316T0002
£ 5,49**
£ 4,67
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 87
  • Diameter 1 [mm]: 53,9
  • Diameter 2 [mm]: 35
  • Housing Type: without housing
  • Height 1 [mm]: 31,5
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 83°C, with seal, Synthetic Material Housing, with sensor (RIDEX, 316T0083)
-15%
original Engine thermostat RIDEX 316T0083
Article №: 316T0083
RIDEX Engine thermostat 316T0083
£ 26,49**
£ 22,52
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 83
  • Supplementary Article/Supplementary Info: with seal
  • Housing Type: Synthetic Material Housing
  • Supplementary Article/Info 2: with sensor
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 80°C, with gaskets/seals (RIDEX, 316T0008)
-15%
original Engine thermostat RIDEX 316T0008
Article №: 316T0008
RIDEX Engine thermostat 316T0008
£ 9,99**
£ 8,49
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 80
  • Supplementary Article/Supplementary Info: with gaskets/seals
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 91°C, 91°C, with Temperature Switch (RIDEX, 316T0072)
-15%
original Engine thermostat RIDEX 316T0072
Article №: 316T0072
RIDEX Engine thermostat 316T0072
£ 16,99**
£ 14,44
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 91
  • Switch Point [°C]: 91
  • Weight [kg]: 0,27
  • Supplementary Article/Info 2: with Temperature Switch
  • Material: Plastic
  • Number of connectors: 2
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 83°C, Synthetic Material Housing, with sensor (RIDEX, 316T0057)
-15%
original Engine thermostat RIDEX 316T0057
Article №: 316T0057
RIDEX Engine thermostat 316T0057
£ 18,99**
£ 16,14
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 83
  • Housing Type: Synthetic Material Housing
  • Supplementary Article/Info 2: with sensor
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 87°C, with seal (MAGNETI MARELLI, 352317101260)
-15%
original Engine thermostat MAGNETI MARELLI 352317101260
Article №: 352317101260
MAGNETI MARELLI Engine thermostat 352317101260
£ 7,49**
£ 6,37
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 87
  • Diameter 1 [mm]: 54
  • Diameter 2 [mm]: 35
  • Supplementary Article/Supplementary Info: with seal
  • Height [mm]: 32
  • Height 1 [mm]: 32
  • Specification: Single Thermostat
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 87°C, with seal, Metal Housing (ERA, 350000A)
-15%
original Engine thermostat ERA 350000A
Article №: 350000A
ERA Engine thermostat 350000A
£ 13,49**
£ 11,47
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 87
  • Supplementary Article/Supplementary Info: with seal
  • Housing Type: Metal Housing
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 88°C, without housing (GATES, TH00188G1)
-15%
original Engine thermostat GATES TH00188G1
Article №: TH00188G1
GATES Engine thermostat TH00188G1
£ 9,49**
£ 8,07
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 88
  • Housing Type: without housing
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 87°C, with seal (MAGNETI MARELLI, 352317100430)
-15%
original Engine thermostat MAGNETI MARELLI 352317100430
Article №: 352317100430
MAGNETI MARELLI Engine thermostat 352317100430
£ 12,49**
£ 10,62
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 87
  • Supplementary Article/Supplementary Info: with seal
  • Specification: With Housing
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 83°C, with seal (MAGNETI MARELLI, 352317101000)
-15%
original Engine thermostat MAGNETI MARELLI 352317101000
Article №: 352317101000
MAGNETI MARELLI Engine thermostat 352317101000
£ 9,49**
£ 8,07
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 83
  • Diameter 1 [mm]: 55
  • Diameter 2 [mm]: 29
  • Supplementary Article/Supplementary Info: with seal
  • Height [mm]: 26
  • Specification: Single Thermostat
  • Condition: New
Details
Over 100 items in stock
Engine thermostat 87°C, with seal (MAHLE ORIGINAL, TX 15 87D)
-15%
original Engine thermostat MAHLE ORIGINAL TX 15 87D
Article №: TX 15 87D
MAHLE ORIGINAL Engine thermostat TX 15 87D
£ 15,99**
£ 13,59
incl. 20% VAT, excl. delivery costs
  • Opening Temperature [°C]: 87
  • Supplementary Article/Supplementary Info: with seal
  • Weight [g]: 0,2
  • Height [in]: 2,76
  • Width [inch]: 2,28
  • Length [in]: 2,56
  • Condition: New
Details
Over 100 items in stock
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