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Nissan 350Z 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 Housing with Gasket for Infiniti G35 Nissan PathfinderEngine Coolant Thermostat Housing with Gasket for Infiniti G35 Nissan Pathfinder
A-Premium®Part # APTHA0018
Engine Coolant Thermostat Housing with Gasket for Infiniti G35 Nissan Pathfinder
4.692 Reviews
$28.99
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2-year warranty
90 days free return
Fits 2007 - 2007 Infiniti G35, 2004 - 2006 Nissan 350Z, 2003 - 2008 Infiniti FX35, 2003 - 2007 Infiniti G35, 2003 - 2006 Nissan 350Z, 2003 - 2003 Infiniti G35, 2001 - 2004 Nissan Pathfinder, 2001 - 2003 Infiniti QX4
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Nissan 350Z
Item LocatedUnited States
Quantity1
ColorNatural
ConditionNew
item #1003CZCY
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Beck/Arnley 143-0788 Engine Coolant Thermostat Housing Assembly
Beck/ArnleyPart # 143-0788
Beck/Arnley 143-0788 Engine Coolant Thermostat Housing Assembly
52 Reviews
$39.99
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3-year warranty
90 days free return
Fits 2016-2018 INFINITI Q50, 2015-2019 INFINITI Q70L, 2015-2015 INFINITI Q40, 2014-2019 INFINITI Q70, 2014-2018 INFINITI Q70, 2014-2017 INFINITI QX50, 2014-2017 INFINITI QX70, 2014-2015 INFINITI Q50, 2014-2015 INFINITI Q60, 2013-2013 INFINITI EX37, 2013-2013 INFINITI FX37, 2012-2013 INFINITI M35h, 2011-2013 INFINITI M37, 2011-2012 INFINITI G25, 2009-2020 Nissan 370Z, 2009-2013 INFINITI G37, 2009-2012 INFINITI FX35, 2009-2010 INFINITI M35, 2008-2012 INFINITI EX35, 2007-2009 Nissan 350Z
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Nissan 350Z
Item LocatedUnited States
Quantity1
Part interchange
143-0788
item #1000XD4R
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Engine Coolant Thermostat - Mahle TI 252 82D
MahlePart # TI 252 82D
Engine Coolant Thermostat - Mahle TI 252 82D
51 Reviews
$35.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2016-2016 INFINITI Q70L, 2015-2018 INFINITI Q70, 2015-2015 INFINITI Q40, 2014-2018 INFINITI Q70, 2014-2017 INFINITI QX70, 2014-2015 INFINITI Q50, 2014-2015 INFINITI Q60, 2014-2015 INFINITI QX50, 2013-2013 INFINITI EX37, 2013-2013 INFINITI FX37, 2012-2013 INFINITI M35h, 2011-2013 INFINITI M37, 2011-2012 INFINITI EX35, 2011-2012 INFINITI FX35, 2011-2012 INFINITI G25, 2009-2017 Nissan 370Z, 2009-2013 INFINITI G37, 2007-2009 Nissan 350Z, 1996-2001 INFINITI I30, 1995-2001 Nissan Maxima
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Nissan 350Z
Item LocatedUnited States
Quantity1
Part interchange
TI 252 82D, 21200-31U01, 21200-31U00, 21200-31U02, 21200-31U03, 33912, 14318, TI25282D, 
...View more
item #1000XT0P
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Engine Coolant Thermostat - Mahle TI 256 77D
MahlePart # TI 256 77D
Engine Coolant Thermostat - Mahle TI 256 77D
51 Reviews
$40.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2008-2008 INFINITI G37, 2007-2007 INFINITI G35, 2003-2008 INFINITI FX35, 2003-2006 INFINITI G35, 2003-2006 Nissan 350Z, 2001-2004 Nissan Pathfinder, 2001-2003 INFINITI QX4
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Nissan 350Z
Item LocatedUnited States
Quantity1
Part interchange
TI 256 77D, 21200-4W000, 21200-4W010, 21200-4W01B, 33940, 14668, TI25677D, 391-170
item #1000XQZN
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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.

Related Blogs

Why Does Coolant Boil After You Turn the Engine Off?

Learn why coolant boils or bubbles after you turn the engine off, how heat soak affects the cooling system, and how to diagnose leaks, trapped air, cap, thermostat, fan, water pump, or head gasket problems.

Jul 29, 2026