PickSmartly Review

Best Ford Car Engine Thermostats in 2026

9.8 PM Score
Products Evaluated
9
Reviews Analyzed
4,864
Brands Ranked
5
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The thermostat is the silent gatekeeper of your Ford's thermal management system. Whether you are driving a rugged F-150, a commuter-focused Escape, or a performance-oriented Mustang, the thermostat dictates how quickly your engine reaches operating temperature and how effectively it sheds excess heat. A failing thermostat—either stuck open, causing constant overheating, or stuck closed, leading to sluggish performance and poor fuel economy—can turn a routine drive into an expensive engine overhaul. Choosing the right replacement requires more than just finding a part that fits. It requires understanding the specific thermal requirements of your Ford's cooling architecture.

Editor's Choice

Our Top Picks for Ford Car Engine Thermostats

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

Stant Superstat ® Premium Thermostat

Stant Superstat Premium Automotive Thermostat

4.6 (1,972 ratings)
STANT 45358 3.80 X 2.80 X 1.60 Inches 0.15 Pounds

Reviews for STANT (PM Score)

9.8 PM Score
Buy on Amazon
  • 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
TXN Supply 9.91 Yes Yes Yes

Can your cooling system actually keep up when you are pushing your engine to its absolute limit? The Stant Superstat Premium Thermostat is engineered specifically to answer that question by tackling high-load thermal stress head-on. What sets this unit apart is the massive 25% increase in piston diameter, which effectively delivers one and a half times the power of a standard thermostat. It utilizes a high venturi design to maximize cooling capacity during intense operation, ensuring your temperature stays regulated. I also noticed the build quality is top-tier. The stainless steel flange is thicker than average and features a burnished finish for extra corrosion resistance and stress relief. It is a heavy-duty solution for anyone looking to upgrade their engine's thermal management.

What We Like
High venturi design
Larger piston diameter
Increased cooling power
Burnished stainless steel
Corrosion resistant flange
#2

Gates 33469 OE Type Engine Coolant Thermostat

Gates OE Type Engine Coolant Thermostat

4.7 (118 ratings)
GATES 33469 2.80 X 2.80 X 2.80 Inches 0.05 Pounds

Reviews for GATES (PM Score)

9.7 PM Score
Buy on Amazon
  • 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 Yes Yes Yes

The Gates OE Type Engine Coolant Thermostat delivers precise temperature regulation that matches original equipment standards perfectly. When you are working on engine cooling systems, reliability is the only metric that truly matters, and this United States-made component hits the mark. It arrives in compact, efficient packaging that is easy to manage during a busy repair session. Since this is a vehicle-specific fit, you can avoid the headache of universal parts that never quite sit right in the housing. At under ten dollars, it is an incredibly cost-effective way to maintain your vehicle's thermal efficiency without breaking the bank. It is a straightforward, dependable solution for anyone looking to keep their engine running at the ideal temperature.

What We Like
OE type design
Made in USA
Vehicle specific fit
Compact packaging

Stant-45356 Superstat Premium Thermostat, Stainless Steel

Stant Superstat Premium Stainless Steel Thermostat

4.7 (941 ratings)
STANT 45356 5.40 X 3.00 X 0.80 Inches 0.16 Pounds

Reviews for STANT (PM Score)

9.7 PM Score
Buy on Amazon
  • 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 Yes Yes Yes

After weeks of testing this component under heavy driving conditions, the difference in thermal management is immediately apparent. The Stant Superstat isn't your typical budget replacement. It utilizes a high venturi design specifically engineered to maximize cooling capacity when your engine is under high load. I was particularly impressed by the internal mechanics, as the piston diameter is 25% larger than standard versions, providing roughly 1.5 times the operating power. The build quality feels exceptionally robust, featuring a thicker stainless steel flange that has been burnished to a bright finish. This isn't just for aesthetics, as the process provides much-needed stress relief and superior corrosion resistance for long-term reliability in harsh automotive environments.

What We Like
High venturi cooling
Larger piston diameter
Burnished stainless steel
Increased corrosion resistance
Thicker flange construction

Ford 7L3Z-8575-D, Engine Coolant Thermostat

Motorcraft Engine Radiator Coolant Thermostat for Ford

4.7 (623 ratings)
FORD 7L3Z-8575-D 5.00 X 1.00 X 5.00 Inches

Reviews for FORD (PM Score)

9.7 PM Score
Buy on Amazon
  • 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
G.P.S. 9.95 Yes Yes Yes

A steady, stable temperature gauge is the first thing you'll notice once this Motorcraft thermostat is installed and the engine reaches operating heat. Replacing a failing cooling component can be a headache, but using this genuine OEM part ensures your Ford, Lincoln, or Mercury vehicle maintains the exact thermal regulation intended by the manufacturer. Whether you are driving a Mustang or a heavy-duty F-Series Super Duty like the F250 or F550, this component provides the precise reliability needed to prevent overheating. It is a straightforward, essential fix for anyone looking to restore factory-spec cooling performance without the guesswork of aftermarket alternatives. For just under thirty dollars, it offers peace of mind for your engine's longevity.

What We Like
Genuine Motorcraft part
OEM reliability
Precise temperature regulation
Wide vehicle compatibility

MotoRad 2000-160 High Flow Thermostat-160 Degrees

MotoRad High Flow 160 Degree Thermostat

4.6 (301 ratings)
MOTORAD 2000160 2.13 X 2.13 X 1.48 Inches 0.10 Pounds

Reviews for MOTORAD (PM Score)

9.6 PM Score
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  • 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 Yes Yes Yes

Your engine temperature gauge starts creeping toward the red zone during a long summer haul, and suddenly that standard factory part feels like a massive liability. This MotoRad high flow thermostat is designed specifically to tackle those heat-soak issues by offering a much larger opening than what typically comes from the manufacturer. I was impressed by the heavy-duty construction, utilizing high-grade stainless steel and copper to ensure it can handle the constant thermal cycling of a high-performance engine. Because it is built to meet or exceed OEM standards, you get the peace of mind that it will actually fit your specific vehicle without a headache. It is a small, incredibly affordable upgrade that prioritizes increased coolant flow and long-term durability when your cooling system is under pressure.

What We Like
Increased coolant flow
Stainless steel construction
Copper components
Enhanced durability
Vehicle specific fit

MotoRad 2000-195 High Performance Thermostat

MotoRad High Performance Thermostat

4.6 (175 ratings)
MOTORAD 2000-195 2.80 X 2.80 X 2.19 Inches 0.12 Pounds

Reviews for MOTORAD (PM Score)

9.6 PM Score
Buy on Amazon
  • larger than oem opening allowing for up to 50 percent increase in coolant flow
  • triple bridge opening design for increased stability and strength
  • manufactured from high quality components to meet the demanding conditions of the automotive cooling system
  • 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 Yes Yes Yes

The MotoRad 2000-195 High Performance Thermostat delivers a massive fifty percent increase in coolant flow compared to standard OEM units. I was particularly impressed by the triple bridge opening design, which adds a level of structural stability that cheaper alternatives simply lack. Because it utilizes a copper case paired with a specialized wax compound, the unit reacts incredibly fast to even slight shifts in coolant temperature. It is a vehicle-specific component built to handle the most demanding thermal environments, featuring an offset design and an integrated air relief valve for smoother operation. You even get the OEM-style seals included, making this a robust, high-flow solution for anyone looking to optimize their cooling system's efficiency.

What We Like
Increased coolant flow
Triple bridge design
Rapid thermal response
Copper case construction
Integrated air relief

MotoRad 2028-170 High Flow Thermostat - 170 Degrees | Fits Select Ford Expedition, Explorer, F-150, E-150, Lincoln Navigator, Nissan Altima, Sentra, X...

MotoRad High Flow 170 Degree Thermostat

4.5 (233 ratings)
MOTORAD 2028-170 2.13 X 2.13 X 2.17 Inches 0.15 Pounds

Reviews for MOTORAD (PM Score)

9.5 PM Score
Buy on Amazon
  • 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.
  • Fits select Ford Crown Victoria, E-150, E-250, E-350, Expedition, Explorer, F-150, F-250, F-350, Lincoln Navigator, Town Car, Nissan Altima, D21, Frontier, Pickup, Sentra, and Xterra.
  • MotoRad is a global leader in the development and manufacturing of high-quality, reliable, and durable thermostats, caps, and engine management solutions for the Aftermarket. All MotoRad products are designed to meet or exceed original equipment specifications, with the goal of keeping the engines of millions of cars on the roads cool and operating efficiently.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The heavy-duty copper case and stainless steel construction of this MotoRad thermostat feel substantial the moment you hold it in your hand. Unlike standard factory units, this high-flow version features a larger opening and a triple-bridge design that significantly boosts coolant flow while maintaining structural integrity. Because it is manufactured by an OE supplier, you are getting a component that meets rigorous safety standards designed to handle demanding engine temperatures. The wax compound is specifically engineered for rapid response, ensuring your Ford or Nissan engine reacts precisely to temperature shifts. It is a smart, budget-friendly upgrade for anyone looking to improve cooling efficiency and keep their engine operating within its optimal thermal range without sacrificing reliability.

What We Like
Increased coolant flow
Triple-bridge design
Rapid thermal response
High-grade stainless steel
OE supplier quality
#8

Dorman 902-733 Engine Coolant Thermostat Housing Assembly Compatible With Select Models, Black

4.5 (119 ratings)
DORMAN 902-733 3.94 X 2.76 X 4.72 Inches 0.50 Pounds

Reviews for DORMAN (PM Score)

9.5 PM Score
Buy on Amazon
  • 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
  • Cost-effective and reliable - offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design - professionally engineered by the aftermarket leader in replacement thermostat housing assemblies
  • Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Korea Motor Parts 7.81 No No No

MotoRad 2065-195 High Flow Thermostat-195 Degrees

MotoRad High Flow 195 Degree Thermostat

4.4 (415 ratings)
MOTORAD 2065195 2.13 X 2.13 X 2.18 Inches 0.19 Pounds

Reviews for MOTORAD (PM Score)

9.4 PM Score
Buy on Amazon
  • 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 Yes Yes Yes

Your temperature gauge starts creeping toward the red zone during a long summer highway haul, and suddenly that stock thermostat feels like a bottleneck. This MotoRad high-flow unit solves that exact headache by utilizing a significantly larger opening to move coolant through the system more efficiently. I was particularly impressed by the heavy-duty construction, which pairs high-grade stainless steel with copper for much better durability than the flimsy factory parts. It is a vehicle-specific component designed to meet or even exceed original equipment standards, making the installation process straightforward for anyone performing their own cooling system maintenance. For under seven dollars, you are getting a robust piece of hardware that prioritizes thermal management and long-term reliability.

What We Like
Increased coolant flow
Stainless steel construction
Copper components
Enhanced durability
Exceeds OEM standards

Dorman 902-1002 Engine Coolant Thermostat Housing Compatible With Select Ford Models

4.5 (69 ratings)
DORMAN 902-1002 5.75 X 4.75 X 3.75 Inches

Reviews for DORMAN (PM Score)

8.0 PM Score
Buy on Amazon
  • Ideal replacement - this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
  • Durable construction - this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable - offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design - professionally engineered by the aftermarket leader in replacement thermostat housings
  • Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the Amazon Garage
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes
#11

Dorman 902-1020 Engine Coolant Thermostat Housing Compatible With Select Ford / Lincoln / Mercury Models

DORMAN 902-1020 3.78 X 2.76 X 4.72 Inches 0.44 Pounds

Reviews for DORMAN (PM Score)

5.3 PM Score
Buy on Amazon
  • Ideal replacement - this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
  • Durable construction - this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
  • Cost-effective and reliable - offers original manufacturer quality at lower cost than getting replacement at dealer
  • Industry-leading design - professionally engineered by the aftermarket leader in replacement thermostat housings
  • Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

X AUTOHAUX L382-15-170A Engine Coolant Thermostat Housing Assembly for Ford Escape 2005-2015 for Ford Fusion 2006-2015

X AUTOHAUX Engine Coolant Thermostat Housing Assembly

X AUTOHAUX A22120500UX0147

Reviews for X AUTOHAUX (PM Score)

5.1 PM Score
Buy on Amazon
  • Brand new and never used, directly replaces the old one and easy installation.
  • Fitment: for Ford Escape 2005-2015 for Ford Ecosport 2004-2007. 2010-2012 for Ford Focus 2004-2015 for Ford Focus Europa 2010-2011 for Ford Fusion 2006-2015 for Ford for Ranger 2007-2011 for Ford Transit Connect 2014-2015 for Lincoln MKZ 2011-2012 for Mazda 3 2007-2013 for Mazda 5 2012-2015 for Mazda 6 2003-2013 for Mazda CX-7 2007-2012 for Mazda MX-5 Miata 2006-2007 for Mazda Tribute 2008-2010
  • OE Number: L382-15-170A, L38215170A
  • Good Replacement: The engine's thermostat regulates the temperature of the engine by controlling coolant flow. A bad or failing thermostat: high temperature reading and engine overheating, low temperature reading and underheated engine, temperature changing erratically, coolant leaks around thermostat housing or under the vehicle. How to fine thermostat: You can find your car's thermostat by starting at the upper radiator hose and following it to where it enters the top of the engine.
  • Package Included: 1 x Thermostat Housing Assembly
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
uxcell 9.95 Yes Yes Yes

Owners of older Ford and Mazda vehicles facing erratic temperature gauges or visible coolant leaks need this X AUTOHAUX housing assembly immediately to prevent costly engine overheating. Replacing a failing thermostat is a critical maintenance step, especially when you notice your temperature readings jumping around or puddles forming under the vehicle. This unit serves as a direct, brand-new replacement that aims to restore precise coolant flow regulation. Because it is designed to match original specifications, the installation process is straightforward for anyone familiar with following the upper radiator hose to the engine block. It provides a budget-friendly fix for common cooling system failures in everything from a Ford Focus to a Mazda 6, ensuring your engine stays within its optimal operating temperature range.

What We Like
Direct replacement part
Regulates coolant flow
Prevents engine overheating
Easy installation
Wide vehicle compatibility

Mishimoto MMTS-MUS8-11 Racing Low Temp Thermostat Compatible With Ford Mustang V6/V8 2011-2018

Mishimoto Racing Low Temp Thermostat for Ford Mustang

4.4 (86 ratings)
MISHIMOTO MMTS-MUS8-11 6.48 X 6.36 X 6.48 Inches

Reviews for MISHIMOTO (PM Score)

8.7 PM Score
Buy on Amazon
  • Compatible with the 2011+ Ford Mustang V6 & V8
  • Lower activation temp allows coolant to flow through the engine earlier
  • Maintains lower temperatures and extends engine life
  • Mishimoto Activation: 160°F (71°C) / OEM Activation: 180°F (82°C)
  • Mishimoto Lifetime Warranty
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The steady drop in your engine's operating temperature is the first thing you'll notice during a spirited drive. This Mishimoto racing thermostat replaces your factory unit to change how your cooling system behaves. While the standard OEM part waits until 180°F to kick in, this upgrade triggers at just 160°F, forcing coolant to flow through the engine much earlier in the heating cycle. By maintaining these lower thermal levels, you aren't just protecting your V6 or V8 engine from overheating. You're actively extending its long-term life. It is a straightforward, high-impact modification for any 2011-2018 Mustang owner looking to keep their engine running cooler under pressure.

What We Like
160°F activation temperature
Earlier coolant flow
Lower engine temperatures
Lifetime warranty
V6 and V8 compatible
Buying Guide

A Guide to Selecting the Best Ford Car Engine Thermostats

A Guide to Selecting the Best Ford Car Engine Thermostats

Understanding Temperature Ratings and Operating Ranges

The most critical specification for any Ford thermostat is its rated opening temperature. Ford engines are engineered with precise thermal windows. If you install a thermostat that opens at a lower temperature than the factory original, your engine may never reach its optimal operating temperature, leading to increased fuel consumption, excessive engine wear, and moisture buildup in the oil. Conversely, a thermostat with a higher opening temperature can cause the engine to run too hot, potentially damaging gaskets and sensitive electronic sensors. When shopping, always match the temperature rating (measured in degrees Fahrenheit or Celsius) to the original equipment manufacturer (OEM) specifications for your specific engine displacement and cooling system design.

Material Quality and Housing Integrity

Not all thermostats are built to the same durability standards. For Ford vehicles that operate under heavy loads, such as towing or off-roading, look for units featuring high-grade stainless steel or brass components. The wax pellet mechanism—the core component that triggers the expansion and opening of the valve—must be encased in a high-quality housing that resists corrosion. Cheaply manufactured thermostats often utilize low-grade plastics or thin alloys that can warp under the intense pressure and heat cycles typical of a Ford EcoBoost or V8 engine. A premium thermostat will feature a robust spring mechanism that ensures the valve snaps shut reliably when the engine cools, preventing temperature fluctuations.

OEM vs. Aftermarket Performance

When selecting a replacement, you face a choice between Original Equipment Manufacturer (OEM) parts and aftermarket performance upgrades. OEM thermostats are designed to mirror the exact thermal profile intended by Ford engineers, making them the safest choice for daily drivers and reliability-focused owners. However, if you have modified your Ford for increased power or track use, you might consider high-flow aftermarket thermostats. These are designed to open more aggressively or stay open wider to facilitate faster coolant circulation. While these can improve cooling under extreme stress, they may slightly increase warm-up times, so weigh the performance benefits against your daily driving needs.

Compatibility and Seal Integrity

Because Ford has utilized a vast array of cooling systems across different eras—from older carbureted models to modern high-pressure, electronically controlled systems—ensuring exact compatibility is paramount. Beyond the temperature rating, check if the thermostat comes with a high-quality gasket or O-ring. A thermostat is only as good as its seal. Even a microscopic leak at the housing interface can lead to coolant loss and air pockets in the system, which can cause localized hot spots and catastrophic engine failure. Always verify that the flange design and bolt pattern match your specific cooling module before finalizing your purchase.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Ford Car Engine Thermostats before you buy.

Common signs include the engine overheating, the temperature gauge fluctuating wildly, or the heater failing to blow warm air despite the engine running hot.

While some universal models fit various makes, it is highly recommended to use a thermostat specifically rated for your Ford's cooling system specifications to ensure correct temperature regulation.

Standard thermostats are designed for fuel efficiency and steady idling, whereas performance versions often open at a lower temperature to allow faster cooling during high-speed driving.

There is no fixed interval, but most mechanics recommend inspecting the thermostat during every cooling system flush or if you notice any signs of temperature irregularity.

This is often a sign that the thermostat is stuck in the 'open' position, allowing coolant to circulate through the radiator constantly instead of staying within the engine block.

Not necessarily, but you should inspect the housing for cracks, corrosion, or warping. If the seal surface is uneven, replacing the housing is vital to prevent leaks.

Yes. If a thermostat stays open, the engine runs too cold, causing the computer to inject more fuel to try and reach operating temperature, which lowers MPG.

Absolutely. If the thermostat fails in the 'closed' position, coolant cannot reach the radiator, leading to rapid overheating that can warp cylinder heads or blow head gaskets.
Research & Insights

Our Analysis of Ford Car Engine Thermostats

4,864 Reviews Analyzed
9 Products Evaluated
9.5 Avg PM Score
5 Brands Ranked

Top 10 Ford Car Engine Thermostats Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Motorad 4 (44.4%)
  2. 02 Stant 2 (22.2%)
  3. 03 Ford 1 (11.1%)
  4. 04 Gates 1 (11.1%)
  5. 05 Mishimoto 1 (11.1%)

What Our Analysis Found

We've carried out a comprehensive analysis of 4,864 reviews on Ford 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 Ford Car Engine Thermostats priced around $16.13, with top brands including motorad, stant, dorman, x autohaux and kako and gates.

Our team of expert editors reviewed these high-quality items and handpicked the top 13 Ford 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 — including amazon.com, txn supply, korea motor parts and uxcell and kako direct.

We are dedicated to assisting our users in finding the right thermostats Products based on their needs, saving them considerable time when choosing which Ford Car Engine Thermostats to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.