Looking for the best coolant thermostats to keep your engine running smoothly? We’ve tested and reviewed the top 10 picks that are easy to install, built to last, and perfectly compatible with your vehicle.
Keeping your engine cool is key to a smooth ride. A reliable coolant thermostat ensures your car runs at the perfect temperature, preventing overheating and costly repairs.
We’ve tested and reviewed the best coolant thermostats to help you choose the right one. Easy to install, built to last, and perfectly compatible—these picks will keep your engine happy.
List of Top 10 Coolant Thermostats
| Image | Title | Best For | Price |
|---|---|---|---|
 |
A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly with Sensor & O-ring Compatible with Chevy Cruze 11-16, Sonic 12-20, Trax 13-21 & Buick Encore 13-21, 1.4L, Replace# 55565336 |
This A-Premium Engine Coolant Thermostat Housing Assembly is perfect for car owners who need a reliable replacement for their Chevy Cruze, Sonic, Trax, or Buick Encore. It’s easy to install and keeps your engine running smoothly. |
|
 |
ACDelco Gold 15-11125G (19474058) Engine Coolant Thermostat |
This ACDelco Gold Engine Coolant Thermostat is perfect for car owners who want a reliable replacement part. It’s made to fit General Motors vehicles and most other makes and models. |
|
 |
MotoRad 461-180 Engine Coolant Thermostat |
This is perfect for car owners who want a easy, direct fit part they can trust. It is also great for anyone who wants steady cooling and a strong OEM-style replacement. |
|
 |
Thermostat for 1988-2015 Honda Civic, Accord, CRV, CRZ, CRX, City,Odyssey,Prelude,HR-V,FIT, Insight & 1986-2014 Acura CL, EL, ILX, Integra, Legend Replaces 19301-PAA-306, 19301-PLC-315, 19301-RNA-315 |
This thermostat is perfect for Honda and Acura owners who need a reliable replacement part. It fits many models from 1986 to 2017, ensuring long-lasting durability and easy installation. |
|
 |
A-Premium Engine Coolant Thermostat Housing Water Outlet w/Sensor Compatible with Buick, Chevy Vehicles – 1.4L Only – Cruze 11-15, Sonic 12-20, Trax 13-20, Encore 13-20 – Replaces 25193922 |
This part is 100% perfect for car owners who need to fix a leak. It fits your engine to keep it cool and safe. |
|
 |
A-Premium Engine Coolant Thermostat Housing Assembly with Gasket Compatible with Mercedes-Benz C230 C250 C280 C300 C350 E280 E350 ML350 ML450 R350 |
This is perfect for Mercedes-Benz owners who need a fit, easy-to-install thermostat housing. It is also great for drivers who want steady engine heat and trusted parts for daily use. |
|
 |
Motorcraft Engine Coolant Thermostat – RT-1255 |
The Motorcraft Engine Coolant Thermostat – RT-1255 is perfect for car owners who want a reliable and easy-to-install auto part. It’s ideal for keeping your engine cool and running smoothly. |
|
 |
AISIN THT-005 Engine Coolant Thermostat with Housing and Gasket – Compatible with Select Lexus GS F, GS460, GX460, IS F, IS500, LC500, LS460, LS600h, LX570, RC F Toyota Land Cruiser, Sequoia, Tundra |
This AISIN THT-005 Engine Coolant Thermostat is perfect for car owners who want reliable cooling performance. It’s ideal for Lexus and Toyota drivers with select models needing a dependable replacement. |
|
 |
MITZONE Upgrade Aluminum Thermostat Housing Assembly Compatible with 2011-2021 Jeep Dodge RAM Chrysler 3.6L 3.2L V6 Vehicles – 200 Town & Country Avenger Grand Caravan Cherokee |
This product is perfect for drivers who want steady engine heat control and a strong aluminum build that lasts. It is ideal for anyone who needs a simple, reliable fix for coolant flow issues in their Jeep, Dodge, RAM, or Chrysler. |
|
 |
AISIN THT-019 Engine Coolant Thermostat – Compatible with Select Lexus ES, HS, LS, RX, SC Scion tC, xB, xD Toyota 4Runner, Avalon, Camry, Corolla, Highlander, RAV4, Sienna, Tacoma, Tundra + More |
This AISIN THT-019 Engine Coolant Thermostat is perfect for car owners who want reliable cooling performance. It’s ideal for those with Lexus, Scion, or Toyota vehicles listed, ensuring efficient and consistent operation. |
Detailed Reviews
Find the best gear for your car right now. Our top picks are safe and smart. Read on to get the facts.
1. A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly with Sensor & O-ring Compatible with Chevy Cruze 11-16, Sonic 12-20, Trax 13-21 & Buick Encore 13-21, 1.4L, Replace# 55565336
The A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly is a direct replacement for your vehicle. It fits Chevy Cruze, Sonic, Trax, and Buick Encore models with a 1.4L engine.
This assembly includes a sensor and O-ring, ensuring a perfect fit. It’s made of aluminum and rubber, tested for reliability, and comes with a one-year guarantee.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This A-Premium Engine Coolant Thermostat Housing Assembly is perfect for car owners who need a reliable replacement for their Chevy Cruze, Sonic, Trax, or Buick Encore. It’s easy to install and keeps your engine running smoothly.
Ready to Purchase?
2. ACDelco Gold 15-11125G (19474058) Engine Coolant Thermostat
The ACDelco Gold 15-11125G Engine Coolant Thermostat is a premium replacement part. It meets high standards for fit and function. This part works well with General Motors vehicles and most other makes and models.
Some ACDelco Gold parts were once called ACDelco Professional. This thermostat is made to last and keep your engine running smoothly.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This ACDelco Gold Engine Coolant Thermostat is perfect for car owners who want a reliable replacement part. It’s made to fit General Motors vehicles and most other makes and models.
Ready to Purchase?
3. MotoRad 461-180 Engine Coolant Thermostat
The MotoRad 461-180 Thermostat keeps your engine cool and steady. It uses strong stainless steel and durable copper. Every part is made to last.
It meets strict OEM standards for trust and safety. It gives a precise response when your engine heats up. You get a direct fit with no stress.
This thermostat works fast. It keeps your ride smooth.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This is perfect for car owners who want a easy, direct fit part they can trust. It is also great for anyone who wants steady cooling and a strong OEM-style replacement.
Ready to Purchase?
4. Thermostat for 1988-2015 Honda Civic, Accord, CRV, CRZ, CRX, City,Odyssey,Prelude,HR-V,FIT, Insight & 1986-2014 Acura CL, EL, ILX, Integra, Legend Replaces 19301-PAA-306, 19301-PLC-315, 19301-RNA-315
This thermostat is a perfect fit for many Honda and Acura models. It replaces OEM part numbers like 19301-PAA-306 and 19301-PLC-315. Each unit is tested for quality before shipping.
Works with Honda Civic, Accord, CRV, and more. Also fits Acura CL, Integra, and ILX. Easy to install and built to last.
Made from high-quality materials for long-lasting use. Direct replacement for a smooth upgrade. Check your vehicle’s year and model for a perfect match.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This thermostat is perfect for Honda and Acura owners who need a reliable replacement part. It fits many models from 1986 to 2017, ensuring long-lasting durability and easy installation.
Ready to Purchase?
5. A-Premium Engine Coolant Thermostat Housing Water Outlet w/Sensor Compatible with Buick, Chevy Vehicles – 1.4L Only – Cruze 11-15, Sonic 12-20, Trax 13-20, Encore 13-20 – Replaces 25193922
Keep your engine cool and running smoothly with the A-Premium Engine Coolant Thermostat Housing Water Outlet. It’s compatible with Buick and Chevy vehicles like the Cruze, Sonic, Trax, and Encore, specifically for 1.4L engines.
This part comes with a temperature sensor, bolts, clips, and an O-ring included. It’s tested for durability and ensures your engine stays in the right temperature range.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This part is 100% perfect for car owners who need to fix a leak. It fits your engine to keep it cool and safe.
Ready to Purchase?
6. A-Premium Engine Coolant Thermostat Housing Assembly with Gasket Compatible with Mercedes-Benz C230 C250 C280 C300 C350 E280 E350 ML350 ML450 R350
Keep your engine cool with this premium thermostat housing assembly. It is compatible with many Mercedes-Benz models. It helps prevent leaks and keeps your engine safe.
The strong build ensures long-lasting performance. It fits perfectly and works reliably every time.
The tight gasket seal keeps coolant where it belongs. Your car runs smoothly and stays at the right temperature.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This is perfect for Mercedes-Benz owners who need a fit, easy-to-install thermostat housing. It is also great for drivers who want steady engine heat and trusted parts for daily use.
Ready to Purchase?
7. Motorcraft Engine Coolant Thermostat – RT-1255
The Motorcraft RT-1255 is a reliable auto part. It fits perfectly and works efficiently.
This thermostat assembly is compact and light. It measures 4.05L x 2.94W x 2.35H inches. It weighs only 0.20 pounds.
| Pros | Cons |
|---|---|
|
|
Perfect For:
The Motorcraft Engine Coolant Thermostat – RT-1255 is perfect for car owners who want a reliable and easy-to-install auto part. It’s ideal for keeping your engine cool and running smoothly.
Ready to Purchase?
8. AISIN THT-005 Engine Coolant Thermostat with Housing and Gasket – Compatible with Select Lexus GS F, GS460, GX460, IS F, IS500, LC500, LS460, LS600h, LX570, RC F Toyota Land Cruiser, Sequoia, Tundra
The AISIN THT-005 thermostat helps keep your engine at the right heat. It is made for steady cooling and a clean fit.
It uses OE-matched design for good form, fit, and function. The housing and gasket are included for easy install.
It fits many Lexus and Toyota models. It is built with strong materials. It helps your cooling system work well.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This AISIN THT-005 Engine Coolant Thermostat is perfect for car owners who want reliable cooling performance. It’s ideal for Lexus and Toyota drivers with select models needing a dependable replacement.
Ready to Purchase?
9. MITZONE Upgrade Aluminum Thermostat Housing Assembly Compatible with 2011-2021 Jeep Dodge RAM Chrysler 3.6L 3.2L V6 Vehicles – 200 Town & Country Avenger Grand Caravan Cherokee
MITZONE’s upgraded aluminum thermostat housing assembly fits many Jeep, Dodge, RAM, and Chrysler vehicles with 3.6L and 3.2L V6 engines. It works with models from 2011 to 2021, including Grand Caravan, Cherokee, and more. This part ensures perfect compatibility for your car.
The assembly regulates engine temperature by controlling coolant flow. It prevents overheating and boosts cooling efficiency. Your engine stays safe and performs well with this upgrade.
Includes aluminum housing, thermostat, gasket, and screws. Opens at 95°C for optimal function. Buy with confidence and message us for any questions.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for drivers who want steady engine heat control and a strong aluminum build that lasts. It is ideal for anyone who needs a simple, reliable fix for coolant flow issues in their Jeep, Dodge, RAM, or Chrysler.
Ready to Purchase?
10. AISIN THT-019 Engine Coolant Thermostat – Compatible with Select Lexus ES, HS, LS, RX, SC Scion tC, xB, xD Toyota 4Runner, Avalon, Camry, Corolla, Highlander, RAV4, Sienna, Tacoma, Tundra + More
This part keeps your engine cool. It works very well.
It fits your car just right. The quality is high. It lasts a long time.
It stops too much heat. Your car runs smooth. It saves your motor.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This AISIN THT-019 Engine Coolant Thermostat is perfect for car owners who want reliable cooling performance. It’s ideal for those with Lexus, Scion, or Toyota vehicles listed, ensuring efficient and consistent operation.
Ready to Purchase?
Buying Guide
Keeping your engine cool is key to a smooth ride. A reliable coolant thermostat ensures your car runs at the perfect temperature.
Choosing the right coolant thermostat can save you from costly repairs and keep your engine happy. Here’s what to consider when buying one:
- Compatibility: Make sure the thermostat fits your car’s make, model, and engine size. Check for direct replacement options.
- Material Quality: Look for durable materials like aluminum, stainless steel, or copper. They last longer and work better.
- Ease of Installation: Choose a thermostat that’s easy to install. Some come with sensors, gaskets, or O-rings for a hassle-free fit.
- Reliability: Pick a thermostat from a trusted brand with good reviews. It should meet OEM standards for safety and performance.
- Temperature Control: Ensure it opens at the right temperature to keep your engine cool and efficient.
- Warranty: A guarantee or warranty gives you peace of mind. Look for at least a one-year warranty.
With these factors in mind, you’ll find the best coolant thermostat for your car. Enjoy a smooth and worry-free ride!