Beat the Heat – Summer Essential Maintenance
24/7 Customer service
USD
Add your vehicle
Address
Login
Cart
Item
$0.00
Add your vehicle to ensure fitment/Choose a yearRequired Fields
Select a different vehicle
Make/Model
VIN
Save

2023 Ram 1500 Thermostat

2 items

Upgrade your vehicle's thermostat with A-Premium's high-quality options. Choose reliability and durability for a smoother ride.

  • All filters
  • Sort By
  • Price
  • Brand
  • Material
  • Warranty
A-Premium APTHE020 Engine Coolant ThermostatA-Premium APTHE020 Engine Coolant Thermostat
A-Premium®Part # APTHE020
A-Premium APTHE020 Engine Coolant Thermostat
4.680 Reviews
$23.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2005 - 2020 Chrysler 300, 2023 - 2023 Chrysler 300, 2005 - 2010 Chrysler 300, 2012 - 2014 Chrysler 300, 2023 - 2023 Chrysler 300, 2007 - 2009 Chrysler Aspen, 2009 - 2020 Dodge Challenger, 2023 - 2023 Dodge Challenger, 2008 - 2010 Dodge Challenger, 2015 - 2020 Dodge Challenger, 2023 - 2023 Dodge Challenger, 2011 - 2020 Dodge Challenger, 2023 - 2023 Dodge Challenger, 2006 - 2021 Dodge Charger, 2023 - 2023 Dodge Charger, 2006 - 2010 Dodge Charger, 2015 - 2020 Dodge Charger, 2023 - 2023 Dodge Charger, 2012 - 2020 Dodge Charger, 2023 - 2023 Dodge Charger
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2023 Ram 1500
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1005V1G8
Show less
A-Premium APTHE019 Engine Coolant Thermostat
A-Premium®Part # APTHE019
A-Premium APTHE019 Engine Coolant Thermostat
4.680 Reviews
$22.99
Edit ZIP code
2-year warranty
90 days free return
Fits 2005 - 2020 Chrysler 300, 2023 - 2023 Chrysler 300, 2005 - 2010 Chrysler 300, 2012 - 2014 Chrysler 300, 2023 - 2023 Chrysler 300, 2007 - 2009 Chrysler Aspen, 2009 - 2020 Dodge Challenger, 2023 - 2023 Dodge Challenger, 2008 - 2010 Dodge Challenger, 2015 - 2020 Dodge Challenger, 2023 - 2023 Dodge Challenger, 2011 - 2020 Dodge Challenger, 2023 - 2023 Dodge Challenger, 2006 - 2021 Dodge Charger, 2023 - 2023 Dodge Charger, 2006 - 2010 Dodge Charger, 2015 - 2020 Dodge Charger, 2023 - 2023 Dodge Charger, 2012 - 2020 Dodge Charger, 2023 - 2023 Dodge Charger
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2023 Ram 1500
Item LocatedUnited States
Quantity1
MaterialMetal and Rubber
ConditionNew
item #1005V4XS
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