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Isuzu Thermostat

49 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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Thermostat Housing Assembly for 2007-2018 Isuzu NPRThermostat Housing Assembly for 2007-2018 Isuzu NPR
A-Premium®Part # APTHA0203
Thermostat Housing Assembly for 2007-2018 Isuzu NPR
4.6101 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
Installation PositionWater Pump
ConditionNew
item #1012ZHNV
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Thermostat Housing for 2003-2006 Isuzu Ascender
A-Premium®Part # APTHA0198
Thermostat Housing for 2003-2006 Isuzu Ascender
4.6101 Reviews
$22.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu Ascender: 2003 2004 2005 2006
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
ColorNatural
ConditionNew
item #10152GLN
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Thermostat Housing Assembly for 2003 Isuzu NPR-HD
A-Premium®Part # APTHA0129
Thermostat Housing Assembly for 2003 Isuzu NPR-HD
4.6101 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Isuzu NPR-HD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialAluminum
ConditionNew
item #10027RKY
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Thermostat Housing Assembly for 2003 Isuzu NPR-HD
A-Premium®Part # APTHA0128
Thermostat Housing Assembly for 2003 Isuzu NPR-HD
4.6101 Reviews
$22.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Isuzu NPR-HD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialAluminum
ConditionNew
item #10027Q6H
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Thermostat Housing Assembly for 2007-2009 2012-2018 2020 Isuzu NPR-HD
A-Premium®Part # APTHA0203
Thermostat Housing Assembly for 2007-2009 2012-2018 2020 Isuzu NPR-HD
4.6101 Reviews
$20.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu NPR-HD: 2007 2008 2009 2012 2013 2014 2015 2016 2017 2018 2020
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
Installation PositionWater Pump
ConditionNew
item #1012ZKEY
Show less
Thermostat Housing for 2003-2006 Isuzu NPR-HD
A-Premium®Part # APTHA0198
Thermostat Housing for 2003-2006 Isuzu NPR-HD
4.6101 Reviews
$22.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu NPR-HD: 2003 2004 2005 2006
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
ColorNatural
ConditionNew
item #10152KP5
Show less
Thermostat Housing Assembly for 2003 Isuzu NPR
A-Premium®Part # APTHA0129
Thermostat Housing Assembly for 2003 Isuzu NPR
4.6101 Reviews
$23.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Isuzu NPR
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialAluminum
ConditionNew
item #10027QT3
Show less
Thermostat Housing Assembly for 2003 Isuzu NPR
A-Premium®Part # APTHA0128
Thermostat Housing Assembly for 2003 Isuzu NPR
4.6101 Reviews
$22.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Isuzu NPR
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialAluminum
ConditionNew
item #10027SVA
Show less
Engine Coolant Thermostat Housing Assembly for 2003 Isuzu NPR
A-Premium®Part # APTHA0109
Engine Coolant Thermostat Housing Assembly for 2003 Isuzu NPR
4.6101 Reviews
$18.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Isuzu NPR
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
ColorNatural
ConditionNew
item #1005DWV2
Note
Engine Coolant Thermostat Housing Assembly -- With Water Pump Casting No. 12562459, Includes 186 Fahrenheit Degree Thermostat.
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Thermostat Housing for 2003-2006 Isuzu NPR
A-Premium®Part # APTHA0198
Thermostat Housing for 2003-2006 Isuzu NPR
4.6101 Reviews
$22.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu NPR: 2003 2004 2005 2006
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
ColorNatural
ConditionNew
item #10152G2V
Show less
Engine Coolant Thermostat Housing Assembly for 1996 Isuzu NPR
A-Premium®Part # APTHA0148
Engine Coolant Thermostat Housing Assembly for 1996 Isuzu NPR
4.6101 Reviews
$19.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1996 Isuzu NPR
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
ConditionNew
item #1016P2V5
Note
This item comes with Cover.
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Engine Coolant Thermostat for 2007-2018 Isuzu NPR
A-Premium®Part # APTHE030
Engine Coolant Thermostat for 2007-2018 Isuzu NPR
4.6101 Reviews
$19.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu NPR: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012NKXX
Show less
Engine Coolant Thermostat Housing Assembly for 2003 Isuzu NPR-HD
A-Premium®Part # APTHA0109
Engine Coolant Thermostat Housing Assembly for 2003 Isuzu NPR-HD
4.6101 Reviews
$18.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 2003 Isuzu NPR-HD
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
ColorNatural
ConditionNew
item #1005DVK9
Note
Engine Coolant Thermostat Housing Assembly -- With Water Pump Casting No. 12562459, Includes 186 Fahrenheit Degree Thermostat.
Show less
Engine Coolant Thermostat for 2007-2018 Isuzu NPR
A-Premium®Part # APTHE032
Engine Coolant Thermostat for 2007-2018 Isuzu NPR
4.6101 Reviews
$22.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu NPR: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012NQU8
Show less
Engine Coolant Thermostat for 1982 1984 Isuzu I-Mark
A-Premium®Part # APTHE005
Engine Coolant Thermostat for 1982 1984 Isuzu I-Mark
4.6101 Reviews
$20.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu I-Mark: 1982 1984
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012N4QL
Show less
Engine Coolant Thermostat for 2007-2009 2012-2019 Isuzu NPR-HD
A-Premium®Part # APTHE030
Engine Coolant Thermostat for 2007-2009 2012-2019 Isuzu NPR-HD
4.6101 Reviews
$19.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu NPR-HD: 2007 2008 2009 2012 2013 2014 2015 2016 2017 2018 2019
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012NLKE
Show less
Thermostat Housing Assembly with Seal for 2001-2003 Isuzu Rodeo Sport
A-Premium®Part # APTHA0051
Thermostat Housing Assembly with Seal for 2001-2003 Isuzu Rodeo Sport
4.6101 Reviews
$29.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu Rodeo Sport: 2001 2002 2003
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
ColorNatural
ConditionNew
item #1003CYEZ
Show less
Engine Coolant Thermostat for 2007-2009 2012-2019 Isuzu NPR-HD
A-Premium®Part # APTHE032
Engine Coolant Thermostat for 2007-2009 2012-2019 Isuzu NPR-HD
4.6101 Reviews
$22.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Isuzu NPR-HD: 2007 2008 2009 2012 2013 2014 2015 2016 2017 2018 2019
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012NNGS
Show less
Engine Coolant Thermostat for 1989 Isuzu Trooper
A-Premium®Part # APTHE091
Engine Coolant Thermostat for 1989 Isuzu Trooper
4.6101 Reviews
$16.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1989 Isuzu Trooper
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
ConditionNew
item #10188LHZ
Note
Start to Open Temperature: 92℃.
Show less
Engine Coolant Thermostat for 1989 Isuzu Trooper
A-Premium®Part # APTHE090
Engine Coolant Thermostat for 1989 Isuzu Trooper
4.6101 Reviews
$13.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits 1989 Isuzu Trooper
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Isuzu
Item LocatedUnited States
Quantity1
ConditionNew
item #10188Q9X
Note
Start to Open Temperature: 88℃.
Show less
Page 1 of 3

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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