Car engines are designed to operate within a relatively narrow temperature range. It goes without saying that serious damage can occur if that temperature is exceeded and the engine overheats, but did you know that an engine can be damaged and performance and mileage can suffer if the engine runs too cool? The thermostat regulates engine operating temperature to prevent engine damage and ensure good performance, fuel economy and minimal emissions.

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    • (0 reviews)
      # sp10592
      GM Original Equipment™ Engine Coolant Thermostat by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $8.34 - $36.89
    • (0 reviews)
      # sp10657
      Professional™ Engine Coolant Thermostat by ACDelco®. ACDelco has a Thermostat and Cap for most GM vehicles on the road today. Engineered to work with your car, truck or SUV, ACDelco Professional Thermostats come in a variety of...
      Heavier-duty components and greater flow rates than standard-line thermostats.Designed to be OE-like.
      $2.18 - $34.09
    • (4 reviews)
      # sp4855
      Coolant Thermostat by Gates®. If you want to keep your vehicle safe on the road for many years to come, go with this Gates product. Developed with the utmost attention to detail and manufactured from the highest quality materials,...
      Great design and functionMade from sturdy materials
      $2.96 - $87.98
    • (1 review)
      # sp10019
      Thermostat by MotoRad®. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high quality product used in their vehicle.
      Offer precise pressure controlEnsure the proper fit
      $1.48 - $226.19
    • (0 reviews)
      # sp6402
      Thermostat by Beck Arnley®. For one hundred years, Beck Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s, brand...
      OE quality products from top original equipmentTop quality materials
      $5.72 - $105.85
    • (1 review)
      # sp14899
      Thermostat by Genuine®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $12.68 - $229.08
    • (0 reviews)
      # sp14907
      Thermostat Assembly by Genuine®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $39.77 - $559.01
    • (0 reviews)
      # mpn26598324
      Thermostat Kit by Genuine®. Includes: Housing, Detent Spring, Gasket and Thermostat. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $180.39
    • (0 reviews)
      # mpn3613737972
      Thermostat Kit by Genuine®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $26.21
    • (0 reviews)
      # sp5550
      Thermostat by Motorcraft®. With today’s complicated automotive engines, it is crucial to have the right cooling system components for accurate temperature control, pressure relief, and gasket seals. Motorcraft offers you a wide...
      Direct replacementBuilt to strict Ford Motor Company standards
      $7.19 - $106.54
    • (0 reviews)
      # mpn846514383
      Thermostat Assembly by Motorcraft®. Temperature: 190 Degrees. With today’s complicated automotive engines, it is crucial to have the right cooling system components for accurate temperature control, pressure relief, and gasket...
      Heavy-duty quality for long lifeStainless steel or brass bridge and spring frame, channel-constructed for strength and rigidity
      $12.96
    • (0 reviews)
      # mpn122907405
      Thermostat Kit by Motorcraft®. Temperature: 190 Degrees. Motorcraft engine coolant thermostat kit are designed for maximum performance and durability.
      Direct OEM replacementMeets strict Ford Motor Company standards
      $27.36
    • (0 reviews)
      # sp17136
      Thermostat with Housing Assembly by Motorcraft®. Motorcraft engine coolant thermostat water outlet assembly are designed for maximum performance and durability.
      Heavy-duty quality for long lifeStainless steel or brass bridge and spring frame, channel-constructed for strength and rigidity
      $34.28
    • (1 review)
      # sp4779
      Thermostat by Auto 7®. Is the temperature gauge on your dashboard reading higher than normal? Do you smell antifreeze? Or even worse, is steam billowing out from under your hood? Auto 7 has the quality parts to repair your Hyundai,...
      Original equipment quality parts for Hyundai, KIA and GM Daewoo vehicles without the original equipment priceAll parts meet ISO/TS 16949, ISO 14000, and QS 9000 standards
      $4.58 - $64.06
    • (0 reviews)
      # sp94891
      Thermostat by Crown®. Crown Automotive is just the ticket if you want to get the most out of your vehicle as well as revel in a more exciting driving experience. You will surely get a real bang for the buck!
      Developed to improve your driving experienceConstructed to ensure ultimate operation
      $6.23 - $82.92
    • (0 reviews)
      # sp8722
      Thermostat by Omix-ADA®. Major parts like radiators, water pumps, and fans may be the stars of the cooling system, but they couldn't do their jobs without the supporting cast of hoses, gaskets, thermostats, radiator caps, and...
      Performs according to OEM specificationsMeets or exceeds OEM quality standards
      $3.96 - $31.82
    • (0 reviews)
      # mpn469958671
      Low Temperature Thermostat by HKS®. HKS Lowtemp Thermostat's valve opening temperature is 75. (Stock's temperature is 100). HKS Lowtemp Thermostat can be replaced with the stock oil thermostat of Lancer Evolution I to X. Designed...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $84.54
    • (5 reviews)
      # sp5089
      Thermostat by Stant®. Get fast engine warm-up and dependable engine operating temperature with a Stant thermostat. Stant’s exclusive ELAC® Thermostat Cutaway heat motor has a uniquely formulated thermally expansive wax fill that...
      Quality construction ensures exact fit and prolonged service life.Stainless steel bridge with channel-design for strength and rigidity.
      $3.20 - $66.46
    • (0 reviews)
      # sp96358
      Thermostat by Merchant Automotive®. Build your ideal engine cooling system with superior Merchant Automotive cooling system parts that will help effectively carry away heat to prevent engine compartment overheating. Manufactured...
      Designed to increase cooling system performance and reliabilityHelp efficiently cool down your engine compartment
      $50.90 - $61.65
    • (0 reviews)
      # mpn469957343
      Thermostat Kit by Merchant Automotive®. Build your ideal engine cooling system with superior Merchant Automotive cooling system parts that will help effectively carry away heat to prevent engine compartment overheating....
      Designed to increase cooling system performance and reliabilityHelp efficiently cool down your engine compartment
      $111.10
    • (0 reviews)
      # sp35776
      Thermostat by Behr®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart of...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $38.37 - $63.34
    • (0 reviews)
      # sp35782
      Thermostat Assembly by Behr®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $51.15 - $57.54
    • (0 reviews)
      # sp32761
      Thermostat by Calorstat®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $8.20 - $58.73
    • (0 reviews)
      # sp32763
      Thermostat Kit by Calorstat®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $25.20
    • (0 reviews)
      # mpn1858862
      Thermostat by Eurospare®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $46.02
    • (0 reviews)
      # sp8751
      Thermostat by Febi®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart of...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $42.76
    • (0 reviews)
      # sp1923
      Thermostat by Kuzeh®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart of...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $13.12 - $24.25
    • (0 reviews)
      # mpn2449655651
      Thermostat Assembly by Mopar®. Includes: Housing, Thermostat and Gasket. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly...
      The finest quality at a great priceOEM fit and function at a reasonable price
      $11.40
    • (0 reviews)
      # mpn4414091883
      Thermostat Assembly by Mopar®. Includes: Gasket and Housing. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient...
      The finest quality at a great priceOEM fit and function at a reasonable price
      $26.75
    • (0 reviews)
      # mpn2187422
      Thermostat Assembly by Mopar®. Includes: Thermostat, Housing and Water Tube. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly...
      The finest quality at a great priceOEM fit and function at a reasonable price
      $40.38
    • (1 review)
      # mpn1590142055
      Thermostat Assembly by Mopar®. Includes: Housing and Gasket. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient...
      The finest quality at a great priceOEM fit and function at a reasonable price
      $76.26
    • (2 reviews)
      # sp8781
      Thermostat Housing by Mopar®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the...
      The finest quality at a great priceOEM fit and function at a reasonable price
      $18.41 - $20.06
    • (0 reviews)
      # mpn1712391
      Thermostat by MTC®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart of...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $12.76
    • (1 review)
      # sp102274
      Thermostat by NTC®. Has your temperature gauge needle been creeping up? Are you seeing green puddles on the ground under your vehicle? If so, you may need cooling system repairs, which should not be put off, because overheating can...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $11.58 - $55.35
    • (0 reviews)
      # sp8752
      Thermostat by Original Equipment®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $11.11 - $46.65
    • (0 reviews)
      # sp43271
      Thermostat Assembly by Original Equipment®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $46.53 - $70.07
    • (0 reviews)
      # sp8742
      Thermostat by Vaico®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart of...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $11.60 - $83.31
    • (0 reviews)
      # sp8732
      Thermostat by Vemo®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart of...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $14.98 - $69.57
    • (0 reviews)
      # sp102275
      Thermostat Assembly by Vemo®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $59.18
    • (0 reviews)
      # sp47876
      by W® -P WAHLER Thermostat Gasket. Has your temperature gauge needle been creeping up? Are you seeing green puddles on the ground under your vehicle? If so, you may need cooling system repairs, which should not be put off, because...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $1.12 - $26.05
    • (0 reviews)
      # sp47874
      Thermostat by Wahler®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the heart of...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $7.40 - $55.70
    • (0 reviews)
      # mpn2472014
      Thermostat Assembly by Wahler®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $45.38
    • (0 reviews)
      # mpn4415001762
      Thermostat Assembly by Wahler®. Includes: Seal. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $52.90
    • (0 reviews)
      # mpn286794030
      Thermostat Assembly by Wahler®. Includes: Housing and Gasket. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $50.56
    • (0 reviews)
      # mpn2472005
      Thermostat Assembly by Wahler®. 90 Degrees. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $48.07
    • (0 reviews)
      # mpn286794029
      Thermostat Assembly by Wahler®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure the...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $197.54
    • (0 reviews)
      # mpn286794033
      Thermostat Assembly by Wahler®. Includes: Housing. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $120.73
    • (0 reviews)
      # mpn4415002522
      Thermostat Assembly by Wahler®. Includes: Thermostat, Housing, Hose Outlet, Temperature Sensor and Gasket. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $115.44
    • (0 reviews)
      # mpn2472008
      Thermostat Assembly by Wahler®. 87 Degrees. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $28.46
    • (0 reviews)
      # mpn4415001761
      Thermostat Assembly by Wahler®. Includes: Housing. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $103.02
    • (0 reviews)
      # mpn286794034
      Thermostat Assembly by Wahler®. Includes: Thermostat, Housing, Hose Outlet, Temperature Sensor and Gasket. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $116.89
    • (0 reviews)
      # sp94306
      Coolant Thermostat Housing Assembly by Beck Arnley®. For one hundred years, Beck Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the...
      OE quality products from top original equipmentTop quality materials
      $15.39 - $179.48
    • (0 reviews)
      # mpn2772289439
      Thermostat Housing by Eurospare®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement product and be sure...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $104.74
    • (1 review)
      # sp93622
      GM Original Equipment™ Thermostat Seal by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $1.30 - $24.87
    • (0 reviews)
      # sp93626
      Professional™ Thermostat Seal by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $0.92 - $1.44
    • (0 reviews)
      # sp10020
      Thermostat Seal by MotoRad®. MotoRad seals and gaskets are made from high quality materials suitable for resistance to high temperatures and engine coolant to maintain a superior, long lasting seal.
      Made of High quality materialsResistance to high tempertures
      $0.34 - $2.64
    • (0 reviews)
      # sp35960
      Engine Coolant Thermostat Gasket by Beck Arnley®. For one hundred years, Beck Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the...
      OE quality products from top original equipmentTop quality materials
      $0.82 - $6.03
    • (0 reviews)
      # mpn3613714760
      Engine Coolant Thermostat Housing Cap by Genuine®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $18.01
    • (0 reviews)
      # mpn26599404
      Engine Coolant Thermostat Housing Cap by Genuine®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $33.77
    • (0 reviews)
      # mpn295992
      Engine Coolant Thermostat Housing Cap by Genuine®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly efficient replacement...
      Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
      $15.43




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    Most thermostats mount in the water outlet where the upper radiator hose is attached. The thermostat contains a heat sensing element exposed to coolant. It restricts coolant flow to allow the engine to warm up fast. As the engine warms and the coolant reaches the thermostat’s rated temperature, it opens and allows coolant to circulate. If coolant temperature drops, the thermostat closes, decreasing coolant flow, thereby regulating engine temperature.

    A thermostat can fail and stick in the open or closed position. If it fails in the closed position, coolant flow will be restricted and the engine will overheat, possibly causing extensive damage like a blown head gasket, cylinder head warpage, and excessive stress to other engine components like pistons, rings, and cylinder walls. If the thermostat fails open, the engine will be slow to warm up, and may never reach the proper operating temperature. This can result in poor output from the heater in cold weather, and also cause performance, fuel economy and emissions problems.

    Engine coolant temperature is an important input to the Powertrain Control Module (PCM) that controls engine function. Low coolant temperature may prevent the engine from going into closed loop where it operates most efficiently, and the air/fuel mixture may stay rich resulting in poor fuel mileage and excessive emissions. Exhaust Gas Recirculation (EGR), evaporative emissions, and transmission torque converter lockup functions are also dependent on coolant temperature. An engine that runs cold may never evaporate the moisture that is a byproduct of combustion, which can contaminate the oil and cause sludge to form.

    Regardless of your thermostat’s mode of failure, we have the replacement thermostat that will restore proper cooling system performance and engine operating efficiency. When choosing a replacement, always select a thermostat with the vehicle manufacturer’s recommended temperature rating. In addition to thermostats, we also have the necessary gaskets and seals required for installation. And if you should find that your water outlet or thermostat housing is cracked, corroded or otherwise damaged and unusable, we have OE spec replacements so you can complete the repair.

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    Replacement Thermostats Reviews

    Average rating:  5  5 - 39 reviews
      /  Read All Thermostats Reviews
    5 of 5
    Mishimoto Racing Thermostat
    What I like about this product is how well it was constructed. The installation of this product was very simple, temperature has dropped and kept at a certain level after doing some hard acceleration runs. I recommend this product to anyone looking to get their high performance or daily drivers a cooler temperature straight out of the box ready to go.
    EPosted by Eduardo (Wray, CO) / April 27, 2017
    2014 GMC Sierra
    Was this review helpful for you? Yes
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