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Lexus RX330 Thermostat

4 items

Upgrade your vehicle's thermostat with A-Premium's high-quality options. Choose reliability and durability for a smoother ride.

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Engine Coolant Thermostat for Toyota Camry 1988-2017 RAV4 Corolla Tacoma HighlanderEngine Coolant Thermostat for Toyota Camry 1988-2017 RAV4 Corolla Tacoma Highlander
A-Premium®Part # APTHE100
Engine Coolant Thermostat for Toyota Camry 1988-2017 RAV4 Corolla Tacoma Highlander
4.694 Reviews
$16.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2020 - 2020 Toyota Sienna, 2010 - 2015 Lexus RX450h, 2010 - 2012 Lexus HS250h, 2009 - 2016 Toyota Venza, 2008 - 2015 Scion xB, 2008 - 2014 Scion xD, 2007 - 2018 Lexus ES350, 2007 - 2015 Lexus RX350, 2006 - 2011 Mitsubishi Eclipse, 2006 - 2008 Lexus RX400h, 2005 - 2016 Scion tC, 2004 - 2011 Mitsubishi Galant, 2004 - 2006 Lexus ES330, 2004 - 2006 Lexus RX330, 2004 - 2006 Mitsubishi Outlander, 2004 - 2005 Mitsubishi Lancer, 2003 - 2014 Toyota Matrix, 2003 - 2010 Pontiac Vibe, 2001 - 2019 Toyota Highlander, 2001 - 2018 Toyota RAV4
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Vehicle: Lexus RX330
Item LocatedUnited States
Quantity1
ConditionNew
item #1018A699
Note
Start to Open Temperature: 82℃.
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Engine Coolant Thermostat for Toyota Camry RAV4 Ford Mitsubishi Scion Lexus 89℃
A-Premium®Part # APTHE071
Engine Coolant Thermostat for Toyota Camry RAV4 Ford Mitsubishi Scion Lexus 89℃
4.694 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2017 - 2017 Toyota Highlander, 2016 - 2017 Toyota RAV4, 2012 - 2017 Toyota Camry, 2012 - 2012 Toyota RAV4, 2011 - 2016 Scion tC, 2011 - 2013 Toyota Sienna, 2010 - 2015 Lexus RX450h, 2010 - 2012 Lexus HS250h, 2010 - 2011 Toyota Camry, 2009 - 2016 Toyota Highlander, 2009 - 2016 Toyota Venza, 2009 - 2016 Toyota Venza, 2009 - 2015 Toyota RAV4, 2009 - 2013 Toyota Matrix, 2009 - 2012 Toyota Corolla, 2009 - 2010 Pontiac Vibe, 2008 - 2016 Toyota Highlander, 2008 - 2015 Scion xB, 2008 - 2014 Scion xD, 2007 - 2017 Lexus ES350
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus RX330
Item LocatedUnited States
Quantity1
ConditionNew
item #1013DUS4
Note
Start to Open Temperature: 89℃.
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A-Premium APTHE006 Engine Coolant Thermostat
A-Premium®Part # APTHE006
A-Premium APTHE006 Engine Coolant Thermostat
4.694 Reviews
$31.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2020 - 2020 Toyota Sienna, 2018 - 2019 Toyota Highlander, 2017 - 2019 Toyota Corolla, 2017 - 2018 Toyota Corolla, 2017 - 2017 Toyota Corolla, 2017 - 2017 Toyota Highlander, 2016 - 2016 Toyota Corolla, 2016 - 2016 Toyota Highlander, 2014 - 2019 Toyota Corolla, 2014 - 2018 Toyota Corolla, 2014 - 2017 Toyota Corolla, 2014 - 2016 Toyota Corolla, 2012 - 2017 Toyota Camry, 2012 - 2012 Toyota RAV4, 2011 - 2016 Scion tC, 2011 - 2012 Toyota Sienna, 2010 - 2015 Lexus RX450h, 2010 - 2012 Lexus HS250h, 2010 - 2011 Toyota Camry, 2009 - 2018 Toyota RAV4
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Vehicle: Lexus RX330
Item LocatedUnited States
Quantity1
MaterialMetal
ConditionNew
item #10156A30
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Beck/Arnley 143-0793 Engine Coolant Thermostat
Beck/ArnleyPart # 143-0793
Beck/Arnley 143-0793 Engine Coolant Thermostat
52 Reviews
$37.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009-2009 Scion xD, 2009-2009 Toyota Matrix, 2008-2010 Toyota Highlander, 2006-2007 Lexus RX400h, 2005-2006 Lexus ES330, 2004-2008 Toyota Solara, 2004-2007 Toyota Highlander, 2004-2006 Lexus RX330, 2004-2006 Toyota Camry, 2004-2006 Toyota Camry, 2003-2008 Toyota Matrix, 2002-2003 Toyota Camry, 2002-2003 Toyota Solara, 2001-2005 Toyota MR2 Spyder, 2001-2005 Toyota RAV4, 2001-2003 Toyota Highlander, 2000-2005 Toyota Celica, 2000-2000 Toyota MR2 Spyder, 1999-2001 Toyota Solara, 1998-2006 Toyota Sienna
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Lexus RX330
Item LocatedUnited States
QuantityOne Set
Part interchange
143-0793
item #1000XG2V
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What is an engine thermostat?

 While all engines can become too hot, if your thermostat isn't working correctly, your engine's well-being is at serious risk. The engine thermostat, often simply referred to as a thermostat, regulates the engine's operating temperature within an optimal range (typically around 195 to 220 degrees Fahrenheit).

How does a car thermostat work?

As a temperature-sensitive valve within the cooling system, a car thermostat responds to changes in coolant temperature. Understanding how it works by the following breakdown steps:

  • Closed position (cold start)

Initially closed to help the engine warm up quickly.

  • Heating up

The engine generates heat during operation.

  • Opening the thermostat

A temperature-sensitive element (usually wax) causes the thermostat to open gradually.

  • Coolant flow

When open, coolant flows from the engine to the radiator.

  • Maintaining optimal temperature

Adjusts coolant flow to maintain the ideal engine temperature.

  • Temperature regulation

Continuously adjusts to prevent overheating and ensure efficient operation.

Signs of a bad thermostat

  1. Overheating: The engine becomes excessively hot due to a stuck-closed thermostat.
  2. Low or fluctuating temperature: A thermostat stuck open results in a cooler engine, affecting fuel efficiency and heating.
  3. Temperature warning light: Illuminates to indicate engine overheating due to a faulty thermostat.
  4. Poor fuel efficiency: Stuck-open thermostat reduces fuel efficiency as the engine operates less efficiently at lower temperatures.
  5. Inadequate cabin heating: Insufficient cabin heating in cold weather with a thermostat that's stuck open.
  6. Coolant leaks: Gasket or sealing issues can lead to coolant leaks.
  7. Rapid temperature fluctuations: The gauge shows rapid swings between hot and cold.
  8. Engine running hot at idle: Higher engine temperature during idle or in traffic due to restricted coolant flow.
  9. Slow or inconsistent warm-up: Longer-than-normal warm-up times, even in moderate weather.
  10. Inconsistent heater operation: This affects the performance of the vehicle's heater, causing inconsistent or inadequate heating in cold weather.

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Jul 29, 2026