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Opel 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 Jeep Chevrolet Ford GMC Buick Cadillac Pontiac 88℃Engine Coolant Thermostat for Jeep Chevrolet Ford GMC Buick Cadillac Pontiac 88℃
A-Premium®Part # APTHE090
Engine Coolant Thermostat for Jeep Chevrolet Ford GMC Buick Cadillac Pontiac 88℃
4.682 Reviews
$13.99
Low stock: Only 3 left
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2-year warranty
90 days free return
Fits 1989 - 1990 Chrysler TC Maserati, 1982 - 1987 GMC S15, 1987 - 1987 Buick Skyhawk, 1981 - 1981 Chevrolet Chevette, 1989 - 1989 Isuzu Trooper, 1983 - 1989 GMC S15 Jimmy, 1988 - 1991 Pontiac Optima, 1970 - 1974 Saab Sonett, 1982 - 1988 Chevrolet Camaro, 1984 - 1986 Jeep Wagoneer, 1981 - 1982 Ford Courier, 1976 - 1977 Mercury Capri, 1966 - 1972 Opel Kadett, 1983 - 1986 Cadillac Cimarron, 1984 - 1985 Pontiac J2000 Sunbird, 1984 - 1986 Jeep Cherokee, 1983 - 1984 GMC S15, 1983 - 1986 Oldsmobile Firenza, 1971 - 1974 Mercury Capri, 1982 - 1982 Chevrolet Cavalier
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Opel
Item LocatedUnited States
Quantity1
ConditionNew
item #101881TK
Note
Start to Open Temperature: 88℃.
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Engine Coolant Thermostat for Jeep Cherokee 84-86 Chevy Camaro 82-88 Buick 92℃
A-Premium®Part # APTHE091
Engine Coolant Thermostat for Jeep Cherokee 84-86 Chevy Camaro 82-88 Buick 92℃
4.682 Reviews
$16.99
Low stock: Only 1 left
Edit ZIP code
2-year warranty
90 days free return
Fits 1989 - 1990 Chrysler TC Maserati, 1982 - 1987 GMC S15, 1987 - 1987 Buick Skyhawk, 1981 - 1981 Chevrolet Chevette, 1989 - 1989 Isuzu Trooper, 1983 - 1989 GMC S15 Jimmy, 1988 - 1991 Pontiac Optima, 1970 - 1974 Saab Sonett, 1982 - 1988 Chevrolet Camaro, 1984 - 1986 Jeep Wagoneer, 1981 - 1982 Ford Courier, 1976 - 1977 Mercury Capri, 1966 - 1972 Opel Kadett, 1983 - 1986 Cadillac Cimarron, 1984 - 1985 Pontiac J2000 Sunbird, 1984 - 1986 Jeep Cherokee, 1983 - 1984 GMC S15, 1983 - 1986 Oldsmobile Firenza, 1971 - 1974 Mercury Capri, 1982 - 1982 Chevrolet Cavalier
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Opel
Item LocatedUnited States
Quantity1
ConditionNew
item #1018827P
Note
Start to Open Temperature: 92℃.
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Beck/Arnley 143-0149 Engine Coolant Thermostat
Beck/ArnleyPart # 143-0149
Beck/Arnley 143-0149 Engine Coolant Thermostat
51 Reviews
$19.99
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3-year warranty
90 days free return
Fits 1964-1968 Alfa Romeo Giulia Sprint, 1997-2002 Audi A4, 1960-1966 Austin Mini, 1962-1962 Austin Mini Cooper, 1963-1963 Austin Mini Cooper, 1964-1964 Austin Mini Cooper, 1965-1965 Austin Mini Cooper, 1966-1967 Austin Mini Cooper, 1968-1969 Austin Mini Cooper, 1968-1970 Austin America, 1973-1975 Austin Marina, 1956-1959 Austin Healey 100-6, 1958-1961 Austin Healey Sprite, 1959-1967 Austin Healey 3000, 1962-1962 Austin Healey Sprite, 1963-1966 Austin Healey Sprite, 1967-1967 Austin Healey Sprite, 1968-1969 Austin Healey Sprite, 1988-1989 Eagle Premier, 1967-1969 Fiat 124
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Opel
Item LocatedUnited States
QuantityOne Set
Part interchange
143-0149
item #1000XG3Z
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Beck/Arnley 143-0156 Engine Coolant Thermostat
Beck/ArnleyPart # 143-0156
Beck/Arnley 143-0156 Engine Coolant Thermostat
51 Reviews
$15.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1964-1968 Alfa Romeo Giulia Sprint, 1960-1966 Austin Mini, 1962-1962 Austin Mini Cooper, 1963-1963 Austin Mini Cooper, 1964-1964 Austin Mini Cooper, 1965-1965 Austin Mini Cooper, 1966-1967 Austin Mini Cooper, 1968-1969 Austin Mini Cooper, 1968-1970 Austin America, 1973-1975 Austin Marina, 1956-1959 Austin Healey 100-6, 1958-1961 Austin Healey Sprite, 1959-1967 Austin Healey 3000, 1962-1962 Austin Healey Sprite, 1963-1966 Austin Healey Sprite, 1967-1967 Austin Healey Sprite, 1968-1969 Austin Healey Sprite, 1988-1989 Eagle Premier, 1967-1969 Fiat 124, 1968-1969 Fiat 124
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Opel
Item LocatedUnited States
Quantity1
Part interchange
143-0156
item #1000XG9H
Show less

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