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Mercury Mountaineer Thermostat

15 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 Assembly for 2002-2010 Mercury MountaineerEngine Coolant Thermostat Housing Assembly for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHA0030
Engine Coolant Thermostat Housing Assembly for 2002-2010 Mercury Mountaineer
4.797 Reviews
$26.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
ColorBlack
ConditionNew
item #10047X38
Note
This part comes with a temperature sensor and it fits the vehicles with engine V6 4.0L only.
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Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE036
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$25.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal, Rubber
ConditionNew
item #1012NPPV
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Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE035
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$22.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ConditionNew
item #1014GSD7
Note
Start to Open Temperature: 82℃.
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Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE004
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$31.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012NE2W
Show less
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE040
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$22.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ConditionNew
item #1014GSE4
Note
Start to Open Temperature: 91℃.
Show less
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE029
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$24.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal
ConditionNew
item #1012NAP1
Show less
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE005
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$20.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012N8VW
Show less
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE003
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$20.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1012N8EL
Show less
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE038
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$21.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal
ConditionNew
item #1012NPXE
Show less
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
A-Premium®Part # APTHE028
Engine Coolant Thermostat for 2002-2010 Mercury Mountaineer
4.797 Reviews
$17.99
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal
ConditionNew
item #1012NPKS
Show less
Engine Coolant Thermostat Housing Assembly for 1998-2001 Mercury Mountaineer
A-Premium®Part # APTHA0023
Engine Coolant Thermostat Housing Assembly for 1998-2001 Mercury Mountaineer
4.797 Reviews
$40.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 1998 1999 2000 2001
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
ColorBlack
ConditionNew
item #10047YCZ
Note
This part only fits V6 4.0L engine and for Ford Explorer 1997-2001, it only fit SOHC only
Show less
Engine Coolant Thermostat for 1998-2010 Mercury Mountaineer
A-Premium®Part # APTHE094
Engine Coolant Thermostat for 1998-2010 Mercury Mountaineer
4.797 Reviews
$17.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
2-year warranty
90 days free return
Fits Mercury Mountaineer: 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ConditionNew
item #10188N63
Note
Start to Open Temperature: 87℃.
Show less
Vemo V15-99-2002-1 Engine Coolant Thermostat
VemoPart # V15-99-2002-1
Vemo V15-99-2002-1 Engine Coolant Thermostat
4.99 Reviews
$27.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015-2015 Volkswagen Jetta, 2013-2013 Volkswagen Jetta, 2013-2013 Volkswagen Jetta, 2012-2013 Volkswagen Jetta, 2011-2015 Volkswagen Jetta, 2011-2013 Volkswagen Jetta, 2011-2011 Volkswagen Jetta, 2011-2011 Volkswagen Jetta, 2011-2011 Volkswagen Jetta, 2011-2011 Volkswagen Jetta, 2007-2010 Volkswagen Golf City, 2007-2009 Volkswagen Jetta City, 2006-2007 Volkswagen GTI, 2006-2006 Volkswagen Golf, 2005-2006 Audi TT, 2004-2005 Volkswagen Jetta, 2004-2005 Volkswagen Passat, 2003-2005 Volkswagen Beetle, 2003-2005 Volkswagen Beetle, 2003-2005 Volkswagen Jetta
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
Part interchange
V15-99-2002-1, 78268S, TX1487D, 5205287, 4154313, 20087, 03G121113, 050121113B, 
...View more
item #1001QS2R
Note
With seal
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ÜRO Parts FD0712940 Engine Coolant Thermostat / Water Inlet Assembly
ÜRO PartsPart # FD0712940
ÜRO Parts FD0712940 Engine Coolant Thermostat / Water Inlet Assembly
52 Reviews
$92.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001-2001 Ford Explorer, 2001-2001 Ford Explorer Sport, 2001-2001 Ford Explorer Sport Trac, 2001-2001 Ford Ranger, 1998-2001 Mercury Mountaineer, 1997-2000 Ford Explorer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
FD0712940, YU3Z-8A586-AA, 902-204, 85331T, CO34736, TH792, CH-2204, TA2204S, 
...View more
item #1000ZR9D
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ÜRO Parts FD0714520 Engine Coolant Thermostat / Water Inlet Assembly
ÜRO PartsPart # FD0714520
ÜRO Parts FD0714520 Engine Coolant Thermostat / Water Inlet Assembly
52 Reviews
$43.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2010 Ford Explorer Sport Trac, 2002-2010 Ford Explorer, 2002-2010 Mercury Mountaineer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
FD0714520, 6L2Z8592-FA, 2L2Z8592A-A, 2L2Z8592B-A, GL2Z8592-A, 2L2Z8575A-A, 902-860, 85675, 
...View more
item #1000ZS85
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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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