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Circoli Thermostat and Housing
181387

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Circoli Thermostat and Housing
Circoli Thermostat and Housing
Please enter your vehicle registration and location to check product suitability and availability.

Circoli Thermostat and Housing
181387

£9.69

Circoli Thermostat and Housing

The thermostat's main job is to allow the engine to heat up quickly, and then to keep the engine at a constant temperature. It does this by regulating the amount of water that goes through the radiator. At low temperatures, the outlet to the radiator is completely blocked; all of the coolant is recirculated back through the engine.Once the temperature of the coolant rises to between 180 and 195 F (82 - 91 C), the thermostat starts to open, allowing fluid to flow through the radiator. By the time the coolant reaches 200 to 218 F (93 - 103 C), the thermostat is open all the way.The secret of the thermostat lies in the small cylinder located on the engine-side of the device. This cylinder is filled with a wax that begins to melt at around 180 F (different thermostats open at different temperatures, but 180 F is a common one). A rod connected to the valve presses into this wax. When the wax melts it expands significantly , pushing the rod out of the cylinder & opening the valve.

If you need to return an item we'll happily offer a refund as long as this is within 28 days of delivery, in its original packaging and you have proof of purchase.

There are several easy ways to return your item(s):

  • FREE in-store returns*
  • by post

You can return an item for FREE to a Retail store, but if you choose to return by post you'll need to cover the cost of postage.  However, if the item you're returning is faulty we'll refund the postage once we've received the item and checked the fault.  

For more information on our Returns Information, including our Courier service, please visit: Returns Information | Halfords UK

Print a returns note form here.

* Please don’t forget your proof of purchase. We may need to verify the serial number on your receipt against the serial number on the item being returned.

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Circoli Thermostat and Housing
Circoli Thermostat and Housing
£9.69

Circoli Thermostat and Housing

The thermostat's main job is to allow the engine to heat up quickly, and then to keep the engine at a constant temperature. It does this by regulating the amount of water that goes through the radiator. At low temperatures, the outlet to the radiator is completely blocked; all of the coolant is recirculated back through the engine.Once the temperature of the coolant rises to between 180 and 195 F (82 - 91 C), the thermostat starts to open, allowing fluid to flow through the radiator. By the time the coolant reaches 200 to 218 F (93 - 103 C), the thermostat is open all the way.The secret of the thermostat lies in the small cylinder located on the engine-side of the device. This cylinder is filled with a wax that begins to melt at around 180 F (different thermostats open at different temperatures, but 180 F is a common one). A rod connected to the valve presses into this wax. When the wax melts it expands significantly , pushing the rod out of the cylinder & opening the valve.

If you need to return an item we'll happily offer a refund as long as this is within 28 days of delivery, in its original packaging and you have proof of purchase.

There are several easy ways to return your item(s):

  • FREE in-store returns*
  • by post

You can return an item for FREE to a Retail store, but if you choose to return by post you'll need to cover the cost of postage.  However, if the item you're returning is faulty we'll refund the postage once we've received the item and checked the fault.  

For more information on our Returns Information, including our Courier service, please visit: Returns Information | Halfords UK

Print a returns note form here.

* Please don’t forget your proof of purchase. We may need to verify the serial number on your receipt against the serial number on the item being returned.