Best Car Engine Thermostats in 2026
Daisy
Last Updated: Feb 9, 2026
Daisy
Last Updated: Feb 9, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Control the flow of coolant through the radiator to enable the engine to reach and maintain its normal operating temperature
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Product Type :Auto Part
Package Dimensions :7.874 Cm L X6.858 Cm W X4.318 Cm H
Country Of Origin :China
Package Weight :0.3Lbs
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| TXN Supply | 9.91 | ✅ | ✅ | ✅ |
Premium Superstat thermostat.
Uses high venturi for maximum cooling capacity during high temperature, high load oepration.
25% larger piston in diameter that delivers 1 1/2 the power of standard thermostats.
Stanless steel flange is burnished to a bright finish for stress relief and added corrosion resistance.
Thicker flange.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
country of origin : united states
the package height of the product is 2.55 inches
the package length of the product is 4.02 inches
the package width of the product is 3.35 inches
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Premium Superstat thermostat.
Uses high venturi for maximum cooling capacity during high temperature, high load oepration.
25% larger piston in diameter that delivers 1 1/2 the power of standard thermostats.
Stanless steel flange is burnished to a bright finish for stress relief and added corrosion resistance.
Thicker flange.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| G.P.S. | 9.95 | ✅ | ✅ | ✅ |
Ford Lincoln Mercury MOTORCRAFT RT1234 engine Radiator coolant Thermostat OEM
Engine Radiator coolant Thermostat
F250 F350 F450 F550 F150 Super Duty Mustang
7L3Z8575D
Motorcraft
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Precision temperature control
More efficient engine operation
Faster engine warm up
Fewer emissions
Better fuel economy
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Original equipment design.
Made of durable material for a long lasting life.
Stainless steel assembly engineered for a smooth performance.
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
High grade stainless steel and copper construction
Meets or exceeds OEM standards
Consistent and precise response to cooling system needs
Original equipment design for worry-free direct fit replacement
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Larger opening for increased coolant flow
Increased strength and durability
High grade stainless steel and copper construction
Meets or exceeds OEM standards
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
manufactured from high quality components to meet the demanding conditions of the automotive cooling system
manufactured with oem specifications and processes
copper case and wax compound assures rapid response to temperature changes in the coolant
offset design, air relief valve, and oem style seals included where applicable
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Original equipment design.
Made of durable material for a long lasting life.
Stainless steel assembly engineered for a smooth performance.
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
oe manufactured for exact form, fit and function
contributes to maintaining cooling system performance
critical aspect of the cooling system
keeps the coolant within the optimal temperature range
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Fits 2001–2013 Chevrolet/GMC 6.6L Duramax
Activates at lower temperature so coolant flows through system earlier
Allows for cooler engine temperatures
Purchase Includes: One 174° F Thermostat / One 180° F Thermostat
Activate at a lower temperature than the OEM thermostats
Perfect for Duramax owners who live in warmer climates, or use their trucks under heavy load or strenuous driving conditions
Allow for cooler temperatures
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| PartsHawk | 9.43 | ❌ | ❌ | ❌ |
Exlusive, Patented design safeguards against overheating
Locking technology prevents costly engine damage
Manufactured with the highest quality materials from an OE supplier
Maintains optimum engine performance temperatures
100% tested and calibrated
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Meets all ignition protection guidelines and standards (USCG, UL-1500) to allow it to be safely used in the bilge compartment.
Safe, self regulated PTC element.
Dual airflow redundancy: Two fans are used for added security in the event of a single fan failure.
Omnidirectional airflow discharge: Better thermal mixing of air results in more uniform heating throughout the compartment.
Safe thermostat temperature control: A hermetically sealed thermostat activates at 45°F (7°C). This ensures that the coldest locations in compartment components do not drop below zero.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
country of origin : united states
the package height of the product is 2.55 inches
the package length of the product is 4.02 inches
the package width of the product is 3.35 inches
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Original equipment design.
Made of durable material for a long lasting life.
Stainless steel assembly engineered for a smooth performance.
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Precision temperature control
More efficient engine operation
Faster engine warm up
Fewer emissions
Better fuel economy
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
OE manufactured for exact Form, Fit and Function
Contributes to maintaining cooling system performance
Critical aspect of the cooling system
Keeps the coolant within the optimal temperature range
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
High grade stainless steel and copper construction
Meets or exceeds OEM standards
Consistent and precise response to cooling system needs
Original equipment design for worry-free direct fit replacement
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
OE manufactured
For exact form, fit and function
They contribute to maintaining cooling system performance
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Quirkparts | 9.71 | ❌ | ❌ | ❌ |
Country of Origin: JAPAN
Fit Type: Vehicle Specific
Package Dimensions: 16.8 " L x 15.9 " W x 5.4 " H
Package Weight: 0.242 kilograms
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Control the flow of coolant through the radiator to enable the engine to reach and maintain its normal operating temperature
Professional, premium aftermarket replacement engine coolant thermostat
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
country of origin : china
the package height of the product is 2.55 inches
the package length of the product is 4.02 inches
the package width of the product is 3.35 inches
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
oe manufactured for exact form, fit and function
contributes to maintaining cooling system performance
critical aspect of the cooling system
keeps the coolant within the optimal temperature range
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
oe manufactured for exact form, fit and function
contributes to maintaining cooling system performance
critical aspect of the cooling system
keeps the coolant within the optimal temperature range
Fit type: Vehicle Specific
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| AutoPlus Auto Parts | 9.42 | ❌ | ❌ | ❌ |
Water outlet thermostat housing made of durable material for a long lasting life.
Thermostat is integrated into housing assembly, simplifying installation.
Item Package Dimension: 6.25" L x 5.0" W x 3.75" H
Item Package Weight: 0.42 lb
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
High grade stainless steel and copper construction
Meets or exceeds OEM standards
Consistent and precise response to cooling system needs
Original equipment design for worry-free direct fit replacement
Fit type: Vehicle Specific
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Acdelco | 15 |
| Motorad | 11 |
| Aisin | 7 |
| Stant | 7 |
| Gates | 6 |
| Motorcraft | 6 |
| Mishimoto | 3 |
| Aremae | 1 |
| Caframo | 1 |
| Ford | 1 |
We've carried out a comprehensive analysis of 14,849 reviews on car engine thermostats, using our selection criteria to identify the best options in the automotive replacement parts. Our findings reveal that most customers typically select car engine thermostats priced around $23.69, with top brands including wmphe, dorman, fokes, caframo, richwei, stant, acdelco, keenso and aremae and uro parts
Our team of expert editors reviewed these high-quality items and handpicked the top 30 car engine thermostats for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the automotive replacement parts category. These include wph store, amazon.com, fokes, richwei, keenqee, novaparts and motopower inc and seblaffpartswhosale .
We are dedicated to assisting our users in finding the right thermostats Products based on their needs, saving them considerable time when choosing which car engine thermostats to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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