Best Car Engine Thermostats of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 15, 2025

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Car engine thermostats are an essential component of any vehicle's cooling system. These small but mighty devices regulate the temperature of the engine by controlling the flow of coolant. By maintaining a consistent operating temperature, the thermostat helps prevent engine damage and improves fuel efficiency. Most thermostats are designed to open at a specific temperature, allowing coolant to flow through the engine and maintain the desired temperature. When the engine is shut off, the thermostat closes to retain heat and prevent damage from freezing. With a wide variety of options available, it's easy to find the right thermostat for any vehicle.

At a Glance: Our Top Picks

Stant 45358 Superstat ® Premium Thermostat Replacement Cover #TOP 1
Stant 45358 Superstat ® Premium Thermostat Replacement
ftb score rating icon 9.8
Stant Superstat Premium Thermostat Cover #TOP 2
Stant Superstat Premium Thermostat
ftb score rating icon 9.7
MotoRad 2065-180 Thermostat Cover #TOP 3
MotoRad 2065-180 Thermostat
ftb score rating icon 9.5

Top 10 Car Engine Thermostats

#TOP 1

Stant 45358 Superstat ® Premium Thermostat Replacement

45358
Stainless Steel
Stant 45358 Superstat ® Premium Thermostat Replacement Cover
Stant 45358 Superstat ® Premium Thermostat Replacement

The Superstat Premium Thermostat is a high quality thermostat manufactured in Israel. It is constructed from stainless steel and is dead accurate. It is designed to deliver maximum cooling capacity and corrosion resistance. It has been tested and proven to work perfectly for a 95 GMC G2500 Vandura 350 5.7L engine and a 2001 Jeep TJ Auto with A/C. It is the finest thermostat available and is well worth the investment.

What We Like
High-quality parts
Accurate temperature regulation
Good fit for vehicles
Reasonable pricing
Trusted brand reputation
What We Don't Like
Delivery timing issues

Stant Superstat Premium Thermostat

STA45359
Stainless Steel
Stant Superstat Premium Thermostat Cover
Stant Superstat ® Premium Thermostat

The Stant Superstat Thermostat is designed to enhance your vehicle's cooling system, especially during demanding conditions. It features a high venturi design that maximizes cooling capacity when temperatures rise and loads increase. With a piston that is 25% larger in diameter, it delivers significantly more power compared to standard thermostats, ensuring your engine stays at optimal temperature. Additionally, the stainless steel flange is polished for stress relief and improved corrosion resistance, providing durability and longevity. This combination of features helps you maintain engine efficiency and reliability, giving you peace of mind on the road.

What We Like
Reliable performance
Easy installation
Accurate temperature readings
Effective coolant system refurb
What We Don't Like
No vent or shaker pin
Gasket not included
#TOP 3

MotoRad 2065-180 Thermostat

2065-180
Silver
MotoRad 2065-180 Thermostat Cover
MotoRad 2065-180 High Performance Thermostat

The MotoRad High Performance Thermostat is designed to meet the demanding conditions of the automotive cooling system. With its larger than OEM opening, it allows for up to a 50 percent increase in coolant flow, ensuring efficient cooling of your car's engine. The triple bridge opening design provides increased stability and strength, adding durability to the thermostat. Made from high-quality components, this thermostat features a copper case and wax compound that allows for rapid response to temperature changes in the coolant. The offset design, air relief valve, and OEM style seals included in this thermostat provide convenience and ensure a proper fit. Upgrade your car's cooling system with the MotoRad High Performance Thermostat and enjoy improved engine performance and longevity.

What We Like
Easy installation
Good value for money
Effective temperature control
Compatible with various vehicles
What We Don't Like
Rubber gasket fit issue
#TOP 4

Gates OE Type Engine Coolant Thermostat

34198
Gates OE Type Engine Coolant Thermostat Cover
Gates 34198 OE Type Engine Coolant Thermostat

The Gates OE Type Engine Coolant Thermostat is designed to provide precise temperature control and an OEM-equivalent fit. It comes with quality-controlled factory calibration, which ensures the accuracy of opening and closing, regardless of pressure changes. Additionally, the jiggle pins for air venting, seals, and gaskets make these thermostats equivalent to the original equipment parts.

What We Like
Precise engine cooling
Easy installation
Durable and reliable
Perfect fit for OEM specifications
Trusted brand quality
What We Don't Like
Initial warming time may vary
Learning period for optimal performance
#TOP 5

MotoRad 2000-195 Thermostat

2000-195
Silver
MotoRad 2000-195 Thermostat Cover
MotoRad 2000-195 High Performance Thermostat Engine Coolant Thermostat Fits Jeep Wrangler 87–06 Grand Cherokee 93–04 Ford F-150 75–97 Ranger 91–08 Mustang 64–04 Taurus 86-07 Dodge Ram 1500 94–03

The MotoRad 2000-195 High Performance Thermostat features a larger than OEM opening which can allow for up to 50 percent increase in coolant flow. Its triple bridge opening design offers increased stability and strength. The copper case and wax compound assure rapid response to temperature changes in the coolant. Its offset design, air relief valve and OEM style seals included where applicable. This thermostat is manufactured from high quality components to meet the demanding conditions of the automotive cooling system.

What We Like
Easy installation
Fits perfectly
Improved cooling performance
Durable and long-lasting
Great value for money
#TOP 6

MotoRad 511-185 Engine Coolant Thermostat

511-185
Copper
MotoRad 511-185 Engine Coolant Thermostat Cover
MotoRad 511-185 Engine Coolant Thermostat

The MotoRad 511-185 Engine Coolant Thermostat is a high-grade stainless steel and copper construction that meets or exceeds OEM standards and provides a consistent and precise response to cooling system needs. This thermostat is an original equipment design for a worry-free direct fit replacement and is vehicle specific. Customer reviews have been mostly positive with a few people having issues with faulty parts.

What We Like
Cost-effective solution
OEM temperature specification
Fast shipping
Works as expected
What We Don't Like
Potential for faulty parts
Packaging issues reported
#TOP 7

Gates Premium Engine Coolant Thermostat

33008S
Gates Premium Engine Coolant Thermostat Cover
Gates 33008S Premium Engine Coolant Thermostat

The Gates Premium Engine Coolant Thermostat offers precision temperature control for more efficient engine operation. It allows for faster engine warm up, fewer emissions, and better fuel economy. Designed for car engines, this thermostat is an essential component for maintaining optimal engine performance.

What We Like
Quality product
Good price
Fits perfectly
Quick delivery
Restores heating functionality
What We Don't Like
Delivery issues
Potential for incorrect fit
#TOP 8

HEVLE High Performance Car Thermostat

HEVLE High Performance Car Thermostat Cover
HEVLE Car Thermostat, High Performance Thermostat, Automotive Replacement Engine Thermostats, Auto Engine Coolant Thermostat Compatible with Honda Civic CRV CRZ, Replaces #19301-PAA-306, 19301-PLC-315

The HEVLE Car Thermostat is designed to enhance your Honda's engine performance. It fits a wide range of Honda models, ensuring compatibility for many drivers. This thermostat effectively manages engine temperature by controlling coolant flow, which helps prevent overheating during both city commutes and long journeys. Made from durable materials, it resists high temperatures and corrosion, providing long-lasting reliability. Before purchasing, you can easily verify the OEM numbers to ensure a perfect fit, helping you avoid any installation issues. With this thermostat, you can keep your engine running smoothly and efficiently.

What We Like
Affordable price
Quick delivery
Easy to order
What We Don't Like
Inaccurate fit for some vehicles
Potential compatibility issues
#TOP 9

Gates 33910 Engine Coolant Thermostat

33910
Gates 33910 Engine Coolant Thermostat Cover
Gates 33910 Integrated Housing Engine Coolant Thermostat

The Gates 33910 Engine Coolant Thermostat is an integrated housing thermostat that opens against the coolant flow from the water pump. The reverse poppet thermostat stays closed when cool, reducing leakage with help from the coolant under water pump pressure. The offset thermostat with jiggle pin valves has a special valve in the flange. It has a fit type of Vehicle Specific with dimensions of "1-5/16" x 1-21/32" x 2-holes w/seal, jiggle pin".

What We Like
Easy installation
Perfect fit
Reliable performance
High-quality product
What We Don't Like
Original parts may require adjustment
#TOP 10

TOPAZ Engine Coolant Thermostat for Mercedes

CPOT1106001
TOPAZ Engine Coolant Thermostat for Mercedes Cover
TOPAZ 2722000115 Engine Coolant Thermostat Assembly with Sensor for Mercedes C230 C280 C300 C350 E350 ML350 GLK350 ML450 SLK280

The TOPAZ Thermostat Assembly is designed specifically for various Mercedes-Benz models, ensuring a perfect fit. It enhances your vehicle's performance by regulating engine temperature efficiently, which can lead to better fuel economy and engine longevity. With straightforward installation, you can easily replace your old thermostat without hassle. This assembly is built with high-quality materials, promising reliability and durability, so you can drive with confidence knowing your engine is well-protected. Always verify fitment to ensure compatibility with your specific model for optimal results.

What We Like
Perfect fit for Mercedes models
Improves engine performance
Easy installation process
High reliability and durability
What We Don't Like
Incorrect gasket included
Buying Guide Image

Some Factors You Should Know About Car Engine Thermostats

When it comes to maintaining your vehicle's engine, choosing the right thermostat is crucial. The thermostat regulates the engine's temperature, ensuring it doesn't overheat or run too cold. With a wide range of thermostats available on the market, it can be difficult to know which one is the best fit for your car. Here are some key considerations to keep in mind when choosing a car engine thermostat.

Compatibility

The first and most important factor to consider is compatibility. Not all thermostats are suitable for all car models and engines. Before making a purchase, check the thermostat's compatibility with your vehicle's make and model. This information is usually available on the product's packaging or on the manufacturer's website.

Temperature range

The thermostat's temperature range is another important factor to consider. Most car engines operate at a temperature between 195-220 degrees Fahrenheit. Choose a thermostat with a temperature range that matches or slightly exceeds this range to ensure your engine is operating at its optimal temperature.

Material

Thermostats are typically made from either brass or composite materials. Brass thermostats are more durable and have a longer lifespan, but they may be more expensive. Composite thermostats are more affordable, but they may not last as long. Consider your budget and the longevity of the thermostat when choosing the material.

Brand

When it comes to car parts, it's always best to choose a reputable brand. Look for thermostats from well-known manufacturers with a good track record in the industry. Read reviews and do your research to ensure you're buying a high-quality product.

Cost

Cost is always a factor when it comes to car parts and maintenance. Consider your budget and shop around to find the best deal. Keep in mind that cheaper thermostats may not be as durable or reliable as more expensive options. It's important to strike a balance between cost and quality to ensure you're getting a good value for your money.

In conclusion, choosing the right car engine thermostat is crucial for maintaining your vehicle's engine. Consider compatibility, temperature range, material, brand, and cost when making your decision. A high-quality thermostat can help prevent overheating and ensure your engine is running at its optimal temperature.

Frequently Asked Questions (FAQs)

1. What are the symptoms of a bad engine thermostat?

Symptoms of a bad engine thermostat include high temperature readings, erratic changes in temperature, leaking coolant, increased fuel consumption, and unusual noises. These signs indicate that the thermostat is not functioning properly and may need to be replaced.

2. How much does it cost to replace an engine thermostat?

The cost to replace an engine thermostat typically ranges from $200 to $500. However, the actual price may vary depending on the vehicle and specific circumstances. Complete replacement may cost an additional $50.

3. Can a car run with a bad thermostat?

It is not recommended to drive a car with a bad thermostat. Although the vehicle may still be able to move, operating it with a faulty thermostat can lead to engine overheating and potential damage to other parts of the vehicle.

4. How often do engine thermostats go bad?

Engine thermostats are designed to last around 100,000 miles or 10 years. However, factors such as driving conditions, such as hot weather or stop-and-go traffic, can impact the lifespan of a thermostat.

5. Is changing a car thermostat easy?

Replacing a car thermostat is generally considered an easy and inexpensive repair. In most cases, it can be done to resolve issues like overheating or lack of heat. It is a relatively straightforward process that does not require extensive expertise or diagnostics.

6. How long does it take a mechanic to replace a thermostat?

On average, a thermostat replacement takes about 1 hour, but it can be as quick as 30 minutes or longer for more complex cases. The time may vary depending on factors such as the accessibility of the part and whether it is stuck in place.

7. How do I know if my water pump or thermostat is bad?

Signs of a bad water pump include coolant leakage and engine overheating. Similarly, a failing thermostat can cause engine overheating. These symptoms indicate potential issues with the water pump or thermostat that may require attention.

8. How do I know if I need a new thermostat?

If your HVAC system does not turn on or respond to the thermostat, it could be a sign of a bad thermostat. Inability to switch between heating and cooling modes or failure to operate the system from the thermostat are indicators that a new thermostat may be needed.

9. Will an engine overheat without a thermostat?

Yes, an engine can overheat without a thermostat. The thermostat regulates the temperature of the engine block, and without it, the cooling system cannot effectively control the temperature. This can result in engine overheating.

10. Can I remove thermostat to stop overheating?

Removing the thermostat to stop overheating is not a recommended solution. While it may temporarily alleviate the issue, it does not fix the underlying problem. The thermostat plays a crucial role in regulating the engine temperature, and removing it does not address the root cause of the overheating.

Editor's Notes

During our car engine thermostat research, we found 24 car engine thermostat products and shortlisted 10 quality products. We collected and analyzed 37,304 customer reviews through our big data system to write the car engine thermostats list. We found that most customers choose car engine thermostats with an average price of $12.69.

The car engine thermostats are available for purchase. We have researched hundreds of brands and picked the top brands of car engine thermostats, including Stant, MotoRad, Gates, HEVLE, TOPAZ. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.