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Professional Car Thermostat | ACDelco

With a full line of more than 300 budget-friendly part numbers, ACDelco has a Thermostat and Cap for most GM vehicles on
the road today. Engineered to work with your car, truck or SUV, ACDelco Professional Thermostats come in a variety of designs
and temperature ratings to meet your needs. We also have gas caps, radiator caps and oil filter/breather caps to replace your
worn Original Equipment.


  • Premium Line Thermostats
  • Value Line Thermostats
  • Heavy-Duty Thermostats


  • Standard Line Thermostats:
    • Designed to be OE-like.
    • ACDelco thermostats come in a wide variety of designs and temperature ratings.
  • Premium Line Thermostats:
    • Heavier-duty components and greater flow rates than standard-line thermostats.
  • Value Line Thermostats:
    • Good-quality thermostats for the value-conscious customer.
  • Heavy-Duty Thermostats:
    • For off-road and heavy-duty trucks.


Find out more about ACDelco Professional Thermostats and how they fit into the Cooling System with the product facts below.


Maintains proper engine operating temperature and allows the engine to warm up faster.

Signs of Wear:

Engine overheating, lack of available heat in the vehicle cabin, reduced fuel economy.

Service & Maintenance:

Maintain proper coolant levels and check level monthly (Note: Never attempt to remove a radiator cap while the engine is hot. Serious injury could result.)

  • Replace coolant with a mixture of antifreeze and water according to the vehicle manufacturer’s recommendations.
  • Inspect engine belts for cracks or missing sections; check belt tension.
  • Evaluate radiator and radiator cap for leaks, corrosion, worn cap gasket.
  • Examine hoses every 12 months. Look for leaks, cracks or rot. Replace when showing signs of wear.
  • Tighten any loose clamps. Replace clamps when replacing hoses.
  • Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating.
  • Periodically, remove bugs, leaves and other debris from the front of the radiator. They can block airflow and substantially reduce cooling efficiency.

Limited Warranty:

12 Months/12,000 Miles*

*Whichever comes first. To the original retail purchaser. Parts only; installation not included. See your local retailer or Independent Service Center that offers ACDelco parts for details.

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