Best Engine Cooling Thermostats in 2026

COMFORT COMES IN YOUR COLOR. Personalize your Wi-Fi Smart Color Programmable Thermostat to fit your décor. The Honeywell Wi-Fi Smart Thermostat does have an auto changeover feature in which the thermostat automatically selects heating or cooling depending on the indoor temperature. Heat and cool settings must be at least 3 degrees apart. The thermostat will automatically adjust settings to maintain this 3-degree separation.

SAVE ENERGY AND GET REWARDED by checking with your energy provider about available rebates. Plus, eligible customers can enroll in their local Utility's "DEMAND RESPONSE PROGRAM" which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.

YOUR SCHEDULE. YOUR WAY. Flexible programming options for your schedule or utility company’s peak rate pricing.

ENERGY STAR certified to help save energy, track your heating and cooling and send personalized tips on reducing energy use.

SAVE ENERGY AND GET REWARDED by checking with your energy provider about available energy savings rebates to save on your purchase. Plus, eligible customers can enroll in their local Utility's "DEMAND RESPONSE PROGRAM" which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.

CONTROL FROM ANYWHERE by using the app or compatible smart home partners including AMAZON ALEXA, GOOGLE ASSISTANT, MICROSOFT CORTANA, and more. Flexible programming options are also available if you'd rather set it and forget it but still benefit from energy savings.

Easy to replace with common tools. See your owner's manual for removal of non-functioning thermostat and replacement of new thermostat.

160 F degree thermostat. Use only the temperature thermostat listed in your owner's manual or service manual.

Proper engine cooling temperature assures peak performance and highest efficiency.

Comes with the thermostat and gasket you need to replace the thermostat

GM-recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability of GM OE

Comes with the thermostat and gasket you need to replace the thermostat

GM-recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability of GM OE

High grade Stainless Steel and Copper Construction

Meets or exceeds OEM standards

Consistent and precise response to cooling system needs

MotoRad High Flow Thermostats have a larger-than-OEM opening that allows for an increase in coolant flow. Its triple-bridge opening design increases stability and strength.

The product is designed with OEM-quality materials and safety standards by an OE Supplier. It stands up to even the most demanding automotive cooling systems.

The copper case and wax compounds assure rapid response to temperature changes in the coolant. The product is engineered with high-grade stainless steel and provides consistent, precise responses to all cooling system needs.

Product Type: Auto Part

Package Quantity: 1

Product Dimensions: 12.953 cms (L) x 27.94 cms (W) x 9.652 cms (H)

Water outlet thermostat housing made of durable material for a long lasting life.

Thermostat is integrated into housing assembly, simplifying installation.

Stant Engine Coolant Thermostat

*** IMPORTANT*** TO VERIFY FITMENT. PLEASE CONTACT US AND PROVIDE THE COMPLETE VIN NUMBER OF YOUR CAR. INCLUDING / YEAR / MAKE / MODEL. WE WILL DOUBLE CHECK FITMENT BEFORE THE ITEM SHIPS.

PLEASE MAKE SURE THAT YOU ARE ORDERING THE CORRECT PARTS FOR YOUR VEHICLE. IF YOU DON'T KNOW OR NOT SURE PLEASE CONTACT US. WE WILL REPLY YOU WITHIN 24 HOURS.

4834100D, 2722000415 , 2722000015, 4834.100D

High use of the scheduling feature of the T5 thermostat saved customers between 8 and 16% on heating and cooling bills. Dollar savings range based on nationwide average annual single-family detached home's heat and cooling bills; actual savings varies based on consumption.

Save Energy and Get Rewarded. Check with your energy provider about available energy savings rebates to save on your purchase. Plus, eligible customers can enroll in their local Utility's "DEMAND RESPONSE PROGRAM" which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.

7-Day Flexible Scheduling or Location Based Temperature Control. It’s your choice. 7-day scheduling programs your thermostat. Geofence technology helps make you comfortable by using your smartphone’s location to know when you’re away and when you return.

Product Type :Auto Part

Package Dimensions :2.9" L X2.9" W X0.4" H

Country Of Origin :China

High grade stainless steel and copper construction

Meets or exceeds OEM standards

Consistent and precise response to cooling system needs

Water outlet thermostat housing made of durable material for a long lasting life.

Thermostat is integrated into housing assembly, simplifying installation.

Eliminates the huge swings in coolant pressure that plague lesser thermostats at high rpm

Fully compatible with Chryslers Dodges and Plymouths

Opens at 160 degrees regardless of engine rpm

Original equipment design.

Made of durable material for a long lasting life.

Stainless steel assembly engineered for a smooth performance.

Built-in thermostat (185°F / 85°C)

Overall Size: 3.02” x 3.11” x 1.18” / Ports: M20 x 1.5” / Material: 6061 Aluminum

Two 1/8" NPT ports (with plug) for sensors/oil feed/etc.

Compatible with Buick LaCrosse Regal Verano Chevrolet Captiva Sport Cavalier Cobalt Equinox

Compatible with GMC Terrain Oldsmobile Alero Pontiac G5 G6 Saturn Aura Ion Sky

Replacement OEM ( Original Equipment Part) Number: 12622410. Other Part Number: 21018811, 33943, 12T103D, 51180, 9461180, 204419, 18888, 461-180, 9461-180, 143-0839, 1601-290247

100% calibration is conducted for each heat motor to guarantee quality and performance

Original equipment design provides exact fit and performance.

Patented ELAC heat motor provides consistant valve response for precise engine cooling

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Original equipment design provides exact fit and performance.

Patented ELAC heat motor provides consistant valve response for precise engine cooling

Stainless steel assembly and springs are engineered for long life and smooth performance.

Genuine Oem: Yes, Category 2: Cooling System, Fitment Footnotes: Vendor, Part Ref# On Diagram: ONLY PART REFERENCE #4 ON THE DIAGRAM IS

Brand: Volkswagen, Fitment Type: Direct Replacement, Alternate Item Name: Engine Coolant Thermostat, Quantity Needed: 1

Manufacturer Part Number: 07K121113B, Category 3: Cooling System, Item Name: Engine Coolant Thermostat, Category 1: Cooling System

【Compatibility Check】-- Reference OEM number: 2722000515. Original standard, direct replacement for old or broken one. This thermostat Especially designed for Mercedes-Benz GL450 2007-2013.

【Constant Temperature Operation】-- This thermostat can automatically adjusts the amount of water entering the radiator according to the cooling water temperature to ensure that the engine operates within the appropriate temperature range.

【High Quality Thermostat】-- Made with high quality Aluminum Alloy for maximum durability. Exquisite workmanship, good anti-corrosion and wear resistance, your better choice.

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

Genuine Mopar Thermostat Housing

Fit type: Vehicle Specific

Part number: 4792916AE

100 percent calibration is conducted for each heat motor to guarantee quality and performance

Original equipment design provides exact fit and performance

Patented ELAC heat motor provides consistent valve response for precise engine cooling

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

Original equipment design.

Made of durable material for a long lasting life.

Stainless steel assembly engineered for a smooth performance.