Uncategorized

The Best Automotive Replacement Engine Thermostats

This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases.

Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

A properly functioning engine thermostat is crucial for maintaining optimal engine temperature, preventing overheating or undercooling. Choosing the right replacement part ensures your vehicle's longevity and performance. This guide will help you navigate the options and select the best thermostat for your automotive needs.

Looking for the best Automotive Replacement Engine Thermostats?

Discover now our comparison of the best Automotive Replacement Engine Thermostats. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Automotive Replacement Engine Thermostats are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Automotive Replacement Engine Thermostats in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1
AISIN THT-019 Engine Coolant Thermostat - Compatible with Select Lexus ES, HS, LS, RX, SC Scion tC, xB, xD...
  • AISIN OE matched engine coolant thermostats are designed for efficient, consistent performance
  • With superior OE technology and know-how, AISIN ensures that every thermostat provides perfect OE form, fit, and function
  • Manufactured using only the highest quality materials for long life and dependable cooling system performance
  • All AISIN thermostats feature the correct OE specified operating temperature
  • Gasket not included
  • Compatible with select vehicles (engine may affect fitment - verify specific fitment details with fit checker above): LEXUS: 1990-91 ES250, 1992-03 ES300, 2004-06 ES330, 2007-18 ES350, 2010-12 HS250h, 1996-97 LS400, 1999-03 RX300, 2004-06 RX330
  • Compatible with (continued): LEXUS: 2007-15 RX350, 2006-08 RX400h, 2010-15 RX450h, 1996-97 SC400; SCION: 2005-16 tC, 2008-15 xB, 2008-14 xD; TOYOTA: 1996-02 4Runner, 1995-18 Avalon, 1988-17 Camry, 1990-93,2000-05 Celica, 1998-14 Corolla
  • Compatible with (continued): TOYOTA: 2001-19 Highlander, 2003-14 Matrix, 1991-95 MR2, 2000-06 MR2 Spyder, 2001-18 RAV4, 1998-16 Sienna, 1999-08 Solara, 1995-98 T100, 1995-04 Tacoma, 2000-04 Tundra, 2009-16 Venza
No. 2
ACDelco Gold 15-11125G (19474058) Engine Coolant Thermostat
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
No. 3
Gates 34198 OE Type Engine Coolant Thermostat
  • Quality-controlled factory calibration assures accuracy of opening and closing, regardless of pressure changes
  • OEM fit, function and design for precise engine cooling
  • > Jiggle pins for air venting, seals and gaskets make these thermostats equivalent to the original equipment parts
No. 4
MotoRad 2000-195 High Performance Thermostat Engine Coolant Thermostat Fits Jeep Wrangler 87–06 Grand...
  • This part fits many vehicle years, makes and models. Please verify fitment with Amazon ConfirmedFit
  • Fits Select JEEP: Wrangler 87-06, Grand Cherokee 93-04, Cherokee 74-01, CJ7 76-86, Comanche 86-92, DJ5 72-83, Grand Wagoneer 84-93, CJ5 72-83, Scrambler 81-85, J10 74-88, Wagoneer 66-90, J20 74-88, Commando 72-73, CJ6 72-75, TJ 97-06, J...
  • Fits Select FORD: F-150 75-97, Ranger 91-08, Mustang 64-04, Taurus 86-07, F-250 65-97, F-350 64-97, Windstar 95-03, Bronco 66-96, Freestar 04-07, Explorer 96-01, E-150 Econoline 75-96, F-250 HD 97, Thunderbird 67-97, F-100 65-83, Aerostar 86-97, LTD Crown...
  • Fits Select DODGE: Ram 1500 94-03, 2500 94-02, 3500 94-03, Dakota 87-03, Durango 98-03, D150 77-93, B250 81-94, W150 78-93, B3500 95-98, B350 81-94, Ramcharger 74-01, D100 75-89, W250 81-93, B2500 95-98, D250 81-93, B1500 95-98, B150 81-94, W...
  • Fits Select CHEVY: C1500 88-97, K1500 88-95, Corvette 55-91, C10 75-86, Camaro 67-92, S10 82-95, K2500 88-95, G20 75-95, K10 75-86, Monte Carlo 70-88, Caprice 66-93, C2500 88-95, El Camino 64-87, G30 75-96, Blazer 69-94, Chevelle 64-73, P30 75-96, K...
  • Fits Select GMC: C1500 79-95, K1500 79-95, K2500 79-95, C2500 79-95, G2500 79-95, Sonoma 91-95, Yukon 92-95, K3500 79-95, C3500 79-95, G3500 79-96, K1500 Suburban 79-95, Jimmy 70-94, S15 82-90, V1500 Suburban 87-91, Safari 85-94, Caballero 78-87, V...
No. 5
GM Genuine Parts 131-151 (12632948) Engine Coolant Thermostat with Seal
  • 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
No. 6
ACDelco GM Original Equipment 131-160 (89018168) 187 Degrees Engine Coolant Thermostat with Seal
  • 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
  • Manufactured to GM OE specification for fit, form, and function
SaleNo. 7
A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly with Sensor & O-ring Compatible with...
  • [Vehicle Fitment]: Compatible with Buick Encore 2017 L4 1.4L (VIN: B), Encore 2013-2016 L4 1.4L, Encore 2018-2021 L4 1.4L; Compatible with Chevrolet Cruze 2011-2016 L4 1.4L, Cruze Limited 2016 L4 1.4L, Sonic 2012-2020 L4 1.4L, Trax 2013-2021 L4 1.4L...
  • [Reference Number]: 55565336, 902-808, 902808, 55579010, 55593034, 28290034, 730221, 730-221
  • [Specification]: ① Start to Open Temperature (℃): 105; ② Material: Aluminum and Rubber; ③ Packaging Type: Box; ④ Gasket or Seal Included: Yes; ⑤ Fitment: Direct Replacement
  • [Benefits]: Through strict hardness and crushing tests, having precise structures and reliable performances. More effectively, adjust the heat dissipation capacity to ensure the engine works within the appropriate temperature range
  • [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted Engine Coolant Thermostat Housing Assembly. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with...
No. 8
Dorman 902-2090 Engine Coolant Thermostat Housing Assembly Compatible with Select Cadillac / Chevrolet / GMC...
  • Ideal replacement - this engine coolant thermostat housing assembly directly replaces the original water outlet on specified vehicle years, makes and models
  • Durable construction - this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Century of experience - for over 100 years, Dorman Products has provided quality automotive replacement parts to its customers
  • Industry-leading design - professionally engineered by the aftermarket leader in replacement thermostat housing assemblies
  • Ensure fit - Input your vehicle into the garage tool and check Confirmed Fit bar at the top of the page. If there is an “i” in a blue circle, additional verification is needed. Please hover over the "i" to verify fitment notes match your vehicle
No. 9
Genuine Honda 19301-RNA-315 Thermostat Assembly
  • genuine oem factory part
  • exact fit
  • durable
  • best in quality
  • this is not an aftermarket part
  • OEM
SaleNo. 10
HEVLE Car Thermostat, High Performance Thermostat, Automotive Replacement Engine Thermostats, Auto Engine...
  • Compatible with Acura: This thermostat is compatible with 1997-1999 CL | 1997-2005 EL | 2013-2014 ILX | 1986-2001 INTEGRA | 1986-1990 LEGEND Car Thermostat. Note: it's not fit for 2000 Dodge Caravan V6 Gas, 2006 Nissan Titan, 2002 Grand Marquis, 2014 GMC...
  • Compatible with Honda: Thermostat Compatible with 1988-2015 Civic ( Not Compatible with 2005 Civic ) | 1990-2002 Accord | 1993-1997 Civic del Sol | 1997-2001 CRV | 2011-2016 CRZ | 1988-1991 CRX | 2010-2013 City | 1995-1998 Odyssey | 1992-1996 Prelude...
  • Replace OEM Numuber: This engine thermostat replacement oem #19301-PAA-306, 19301PAA306, 19301-PLC-315, 19301PLC315, 19301-RNA-315, 19301RNA315. The head diameter of this product is 2.36 inches, the height is 2.24 inches, and the bottom length is...
  • Practical Function: The temperature controller regulates the engine temperature by accurately controlling the flow of coolant, so as to effectively prevent and solve the problem of overheating. Installed on top of the engine and connected to the upper...
  • Product Description: You will receive an engine coolant thermostat, which is made of high-quality materials and is durable. The stainless steel spring frame provides additional strength and durability, offering reliable protection and outstanding...

What is the purpose of a comparison site?

When you search for a product on the Internet, you can compare all the offers that are available from the sellers. However, it can take time when it is necessary to open all the pages, compare the opinions of the Internet users, the characteristics of the products, the prices of the different models… Offering you reliable comparisons allows us to offer you a certain time saving and a great ease of use. Shopping on the Internet is no longer a chore, but a real pleasure!
We do everything we can to offer you relevant comparisons, based on various criteria and constantly updated. The product you are looking for is probably among these pages. A few clicks will allow you to make a fair and relevant choice. Don’t be disappointed with your purchases made on the Internet and compare the best Automotive Replacement Engine Thermostats now!

Last update on 2026-04-22 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Automotive Replacement Engine Thermostats

Understanding Thermostat Types

Replacement thermostats generally fall into a few categories. The most common is the "wax pellet" type, which uses a temperature-sensitive wax to expand and contract, opening and closing the valve. Some high-performance or specialized applications might use "thermal switch" thermostats, though these are less common for standard replacements. For most vehicles, a direct-fit wax pellet thermostat designed for your specific make and model is the appropriate choice.

Key Features to Consider

  • Temperature Rating: This is the most critical specification. It indicates the temperature at which the thermostat begins to open. Using the incorrect rating can lead to engine damage. Always consult your vehicle's owner's manual or a reliable parts catalog for the OEM-specified temperature.
  • Material and Construction: Most thermostats are made of brass or stainless steel. Look for durable materials and a well-constructed sealing mechanism to prevent leaks and ensure longevity.
  • Stantard vs. High-Flow: While most replacements are standard, some performance vehicles might benefit from high-flow thermostats, which allow coolant to circulate more freely. Ensure compatibility before opting for a high-flow model.
  • Included Gasket or Seal: Some thermostats come with a pre-installed gasket or O-ring, simplifying installation. If not included, ensure you purchase the correct one separately.

Compatibility is Crucial

The single most important factor when buying a replacement thermostat is ensuring it's compatible with your vehicle's make, model, and year. Thermostats are engineered for specific engine cooling systems. Using an incompatible part can lead to poor performance, overheating, or leaks.

Installation and Maintenance Tips

Replacing a thermostat typically involves draining some coolant, removing the thermostat housing, swapping the old unit for the new one (ensuring correct orientation), and refilling the coolant system. It's often recommended to replace the thermostat along with the coolant and potentially the radiator cap, especially if they are old. Always follow the vehicle manufacturer's recommended service intervals for coolant system maintenance.