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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 for Ford Explorer Volkswagen Jetta Mercedes-Benz 87℃Engine Coolant Thermostat for Ford Explorer Volkswagen Jetta Mercedes-Benz 87℃
A-Premium®Part # APTHE094
Engine Coolant Thermostat for Ford Explorer Volkswagen Jetta Mercedes-Benz 87℃
4.682 Reviews
$17.99
Low stock: Only 2 left
Edit ZIP code
2-year warranty
90 days free return
Fits 1966 - 1967 Mercedes-Benz 200, 1986 - 1991 Volkswagen Transporter, 1987 - 1990 Volvo 780, 2007 - 2010 Ford Explorer Sport Trac, 1976 - 1979 Volvo 265, 1984 - 1985 Renault Fuego, 1990 - 1991 Mercedes-Benz 300CE, 1966 - 1966 Mercedes-Benz 230S, 1982 - 1984 Peugeot 604, 1977 - 1979 Peugeot 604, 1978 - 1982 Porsche 928, 1963 - 1966 Mercedes-Benz 230SL, 1980 - 1982 Volvo 264, 1981 - 1984 Mercedes-Benz L1116, 1990 - 1992 Dodge Monaco, 1976 - 1976 Volvo 262, 1968 - 1972 Mercedes-Benz 280SE, 1992 - 1993 Volkswagen Corrado, 1979 - 1981 Peugeot 604, 1990 - 1993 Mercedes-Benz 300SL
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ConditionNew
item #1018814Y
Note
Start to Open Temperature: 87℃.
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Engine Coolant Thermostat for Ford F-150 F-250 Explorer Mustang E-150 Jeep
A-Premium®Part # APTHE035
Engine Coolant Thermostat for Ford F-150 F-250 Explorer Mustang E-150 Jeep
4.682 Reviews
$22.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2013 - 2021 Blue Bird Vision School Bus, 1981 - 1986 Chevrolet Chevette, 1992 - 1993 Ford B-600, 1992 - 1992 Ford B-700, 1992 - 2011 Ford Crown Victoria, 2003 - 2003 Ford E-150, 2003 - 2014 Ford E-150, 2003 - 2014 Ford E-150, 2003 - 2003 Ford E-150 Club Wagon, 2003 - 2005 Ford E-150 Club Wagon, 2003 - 2005 Ford E-150 Club Wagon, 1997 - 2002 Ford E-150 Econoline, 1997 - 2002 Ford E-150 Econoline, 1997 - 2002 Ford E-150 Econoline, 1997 - 2002 Ford E-150 Econoline Club Wagon, 1997 - 2002 Ford E-150 Econoline Club Wagon, 1997 - 2002 Ford E-150 Econoline Club Wagon, 2003 - 2003 Ford E-250, 2003 - 2014 Ford E-250, 2003 - 2014 Ford E-250
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ConditionNew
item #1013DV4S
Note
Start to Open Temperature: 82℃.
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A-Premium APTHE038 Engine Coolant Thermostat
A-Premium®Part # APTHE038
A-Premium APTHE038 Engine Coolant Thermostat
4.682 Reviews
$21.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2013 - 2021 Blue Bird Vision School Bus, 1981 - 1986 Chevrolet Chevette, 2002 - 2002 Lincoln Blackwood, 2006 - 2008 Lincoln Mark LT, 1998 - 2014 Lincoln Navigator, 2003 - 2011 Lincoln Town Car, 1994 - 1997 Mercury Cougar, 1992 - 2011 Mercury Grand Marquis, 2005 - 2006 Mercury Monterey, 2002 - 2010 Mercury Mountaineer, 1989 - 1989 Peugeot 405, 1990 - 1991 Peugeot 405, 1981 - 1986 Pontiac Acadian
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal
ConditionNew
item #10156CKV
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A-Premium APTHE028 Engine Coolant Thermostat
A-Premium®Part # APTHE028
A-Premium APTHE028 Engine Coolant Thermostat
4.682 Reviews
$17.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2013 - 2021 Blue Bird Vision School Bus, 1981 - 1986 Chevrolet Chevette, 2002 - 2002 Lincoln Blackwood, 2006 - 2008 Lincoln Mark LT, 1998 - 2014 Lincoln Navigator, 2003 - 2011 Lincoln Town Car, 1994 - 1997 Mercury Cougar, 1992 - 2011 Mercury Grand Marquis, 2005 - 2006 Mercury Monterey, 2002 - 2010 Mercury Mountaineer, 1989 - 1989 Peugeot 405, 1990 - 1991 Peugeot 405, 1981 - 1986 Pontiac Acadian
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal
ConditionNew
item #10156D8W
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A-Premium APTHE004 Engine Coolant Thermostat
A-Premium®Part # APTHE004
A-Premium APTHE004 Engine Coolant Thermostat
4.682 Reviews
$31.99
Edit ZIP code
2-year warranty
90 days free return
Fits 1980 - 1982 AMC Concord, 1981 - 1983 AMC Eagle, 1977 - 1977 AMC Gremlin, 1980 - 1982 AMC Spirit, 1979 - 1979 AMC Spirit, 2013 - 2021 Blue Bird Vision School Bus, 1981 - 1986 Chevrolet Chevette, 1982 - 1982 Datsun 720, 1978 - 1978 Dodge D100, 1979 - 1979 Dodge D100, 1978 - 1978 Dodge D150, 1979 - 1980 Dodge D150, 1978 - 1978 Dodge D200, 1980 - 1980 Dodge D200, 1983 - 1985 Dodge Power Ram 50, 1983 - 1985 Dodge Ram 50, 1978 - 1978 Dodge W150, 1979 - 1979 Dodge W150, 1978 - 1978 Dodge W200, 1979 - 1979 Dodge W200
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1005V2C8
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A-Premium APTHE036 Engine Coolant Thermostat
A-Premium®Part # APTHE036
A-Premium APTHE036 Engine Coolant Thermostat
4.682 Reviews
$25.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2013 - 2021 Blue Bird Vision School Bus, 2003 - 2003 Chevrolet W3500 Tiltmaster, 1993 - 1999 Chevrolet W4500 Tiltmaster, 1992 - 1993 Ford B-600, 1992 - 1993 Ford B-700, 1992 - 2011 Ford Crown Victoria, 2003 - 2003 Ford E-150, 2003 - 2014 Ford E-150, 2003 - 2014 Ford E-150, 2003 - 2003 Ford E-150 Club Wagon, 2003 - 2005 Ford E-150 Club Wagon, 2003 - 2005 Ford E-150 Club Wagon, 1997 - 2002 Ford E-150 Econoline, 1997 - 2002 Ford E-150 Econoline, 1997 - 2002 Ford E-150 Econoline, 1997 - 2002 Ford E-150 Econoline Club Wagon, 1997 - 2002 Ford E-150 Econoline Club Wagon, 1997 - 2002 Ford E-150 Econoline Club Wagon, 2003 - 2003 Ford E-250, 2003 - 2014 Ford E-250
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal, Rubber
ConditionNew
item #1005V4XL
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A-Premium APTHE005 Engine Coolant Thermostat
A-Premium®Part # APTHE005
A-Premium APTHE005 Engine Coolant Thermostat
4.682 Reviews
$20.99
Edit ZIP code
2-year warranty
90 days free return
Fits 1980 - 1982 AMC Concord, 1981 - 1983 AMC Eagle, 1977 - 1977 AMC Gremlin, 1980 - 1982 AMC Spirit, 1979 - 1979 AMC Spirit, 2013 - 2021 Blue Bird Vision School Bus, 1982 - 1982 Isuzu I-Mark, 1984 - 1984 Isuzu I-Mark, 1985 - 1987 Jaguar Vanden Plas, 1978 - 1978 Jaguar XJ6, 1983 - 1987 Jaguar XJ6, 1971 - 1974 Jaguar XKE, 1980 - 1983 Jeep CJ5, 1980 - 1983 Jeep CJ7, 1980 - 1983 Jeep DJ5, 1981 - 1983 Jeep Scrambler, 2002 - 2002 Lincoln Blackwood, 2006 - 2008 Lincoln Mark LT, 1998 - 2014 Lincoln Navigator, 1991 - 2011 Lincoln Town Car
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1005V0CQ
Show less
A-Premium APTHE029 Engine Coolant Thermostat
A-Premium®Part # APTHE029
A-Premium APTHE029 Engine Coolant Thermostat
4.682 Reviews
$24.99
Low stock: Only 4 left
Edit ZIP code
2-year warranty
90 days free return
Fits 2013 - 2021 Blue Bird Vision School Bus, 1981 - 1986 Chevrolet Chevette, 2002 - 2002 Lincoln Blackwood, 2006 - 2008 Lincoln Mark LT, 1998 - 2014 Lincoln Navigator, 2003 - 2011 Lincoln Town Car, 1994 - 1997 Mercury Cougar, 1992 - 2011 Mercury Grand Marquis, 2005 - 2006 Mercury Monterey, 2002 - 2010 Mercury Mountaineer, 1989 - 1989 Peugeot 405, 1990 - 1991 Peugeot 405, 1981 - 1986 Pontiac Acadian
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal
ConditionNew
item #10156AP5
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Engine Coolant Thermostat Housing Assembly for Ford Explorer 2001-2010 Mercury
A-Premium®Part # APTHA0030
Engine Coolant Thermostat Housing Assembly for Ford Explorer 2001-2010 Mercury
4.682 Reviews
$26.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2002 - 2010 Ford Explorer, 2007 - 2010 Ford Explorer Sport Trac, 2002 - 2010 Mercury Mountaineer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ColorBlack
item #10047VNX
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 Housing Assembly for Ford Explorer 1997-2001 Ranger
A-Premium®Part # APTHA0023
Engine Coolant Thermostat Housing Assembly for Ford Explorer 1997-2001 Ranger
4.682 Reviews
$40.99
Low stock: Only 3 left
Edit ZIP code
2-year warranty
90 days free return
Fits 1997 - 2000 Ford Explorer, 2001 - 2001 Ford Explorer, 2001 - 2001 Ford Explorer Sport, 2001 - 2001 Ford Explorer Sport Trac, 2001 - 2001 Ford Ranger, 1998 - 2001 Mercury Mountaineer
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ColorBlack
item #10047WQN
Note
This part only fits V6 4.0L engine and for Ford Explorer 1997-2001, it only fit SOHC only
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Engine Coolant Thermostat for Lincoln Navigato Town Car Chevrolet Chevette 91℃
A-Premium®Part # APTHE040
Engine Coolant Thermostat for Lincoln Navigato Town Car Chevrolet Chevette 91℃
4.682 Reviews
$22.99
Low stock: Only 4 left
Edit ZIP code
2-year warranty
90 days free return
Fits 2013 - 2021 Blue Bird Vision School Bus, 1981 - 1986 Chevrolet Chevette, 2002 - 2002 Lincoln Blackwood, 2006 - 2008 Lincoln Mark LT, 1998 - 2014 Lincoln Navigator, 2003 - 2011 Lincoln Town Car, 1994 - 1997 Mercury Cougar, 1992 - 2011 Mercury Grand Marquis, 2005 - 2006 Mercury Monterey, 2002 - 2010 Mercury Mountaineer, 1989 - 1989 Peugeot 405, 1990 - 1991 Peugeot 405, 1981 - 1986 Pontiac Acadian
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
ConditionNew
item #1013DWGX
Note
Start to Open Temperature: 91℃.
Show less
A-Premium APTHE003 Engine Coolant Thermostat
A-Premium®Part # APTHE003
A-Premium APTHE003 Engine Coolant Thermostat
4.682 Reviews
$20.99
Edit ZIP code
2-year warranty
90 days free return
Fits 1980 - 1982 AMC Concord, 1981 - 1983 AMC Eagle, 1977 - 1977 AMC Gremlin, 1980 - 1982 AMC Spirit, 1979 - 1979 AMC Spirit, 2013 - 2021 Blue Bird Vision School Bus, 1981 - 1986 Chevrolet Chevette, 1982 - 1982 Datsun 720, 1978 - 1978 Dodge D100, 1979 - 1979 Dodge D100, 1978 - 1978 Dodge D150, 1979 - 1980 Dodge D150, 1978 - 1978 Dodge D200, 1980 - 1980 Dodge D200, 1983 - 1985 Dodge Power Ram 50, 1983 - 1985 Dodge Ram 50, 1978 - 1978 Dodge W150, 1979 - 1979 Dodge W150, 1978 - 1978 Dodge W200, 1979 - 1979 Dodge W200
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mountaineer
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1005V2KW
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Vemo V15-99-2002-1 Engine Coolant Thermostat
VemoPart # V15-99-2002-1
Vemo V15-99-2002-1 Engine Coolant Thermostat
57 Reviews
$27.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1997-1997 Audi A4, 1997-1999 Audi A4 Quattro, 1998-1999 Audi A4, 2000-2000 Audi A4 Quattro, 2000-2001 Audi A4, 2000-2002 Audi TT Quattro, 2000-2004 Audi TT, 2001-2001 Audi A4 Quattro, 2001-2001 Audi A4 Quattro, 2005-2006 Audi TT, 1995-1995 Ford Mustang, 1995-1996 Ford Bronco, 1995-1996 Ford E-150 Econoline, 1995-1996 Ford E-150 Econoline Club Wagon, 1995-1996 Ford E-250 Econoline, 1995-1996 Ford E-350 Econoline, 1995-1996 Ford E-350 Econoline, 1995-1996 Ford E-350 Econoline Club Wagon, 1995-1996 Ford E-350 Econoline Club Wagon, 1995-1996 Ford F-150
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
Edit ZIP code
3-year warranty
90 days free return
Fits 1997-2000 Ford Explorer, 2001-2001 Ford Explorer, 2001-2001 Ford Explorer Sport, 2001-2001 Ford Explorer Sport Trac, 2001-2001 Ford Ranger, 1998-2001 Mercury Mountaineer
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
Edit ZIP code
3-year warranty
90 days free return
Fits 2002-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, 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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Jul 29, 2026