Brake Parts
Cooling Parts
Drivetrain & Transmission Parts
Electrical Parts
Engines Parts
Exhaust Parts
Foot Controls & Pegs
Frame & Body
Fuel Parts
Handlebars & Controls
Ignition System Parts
Mounts & Hardware
Performance Chips & Programmers
Racing Exterior & Body Parts
Starting & Charging Parts
Suspension Parts
Windshield & Fairings
Repair Manuals
Brake Parts
Cooling Parts
Drivetrain & Transmission Parts
Electrical Parts
Engines Parts
Exhaust Parts
Foot Controls & Pegs
Frame & Body
Fuel Parts
Handlebars & Controls
Ignition System Parts
Mounts & Hardware
Performance Chips & Programmers
Racing Exterior & Body Parts
Starting & Charging Parts
Suspension Parts
Windshield & Fairings
Repair Manuals
Keep your Fiesta running cool with the Mishimoto low-temperature Fiesta ST thermostat. Optimal engine temperatures are imperative to achieving peak performance. This Fiesta ST thermostat activates at 160 F vs. the stock 207 F, allowing the coolant to flow through the engine earlier. When you're out hot lapping at the track, a lower temperature thermostat will be beneficial in keeping engine temps down. When paired with the Mishimoto Fiesta ST Aluminum Radiator, your Fiesta will maximize cooling efficiency. This Fiesta thermostat, like all our Fiesta ST parts, includes the unparalleled Mishimoto Lifetime Warranty.
Mishimoto, the world leader in performance cooling products, was created for automotive enthusiasts by automotive enthusiasts. Established in 2005, we have two decades of experience in working toward our goal of providing superior cooling system upgrades. Mishimoto has produced a line of upgrades to fit nearly any application, including sport compacts, powersports, trucks, Jeeps, muscle vehicles, daily drivers, and the classics.
This part fits the following vehicles.
| Install Difficulty | 3 |
|---|---|
| SellingPoint01 | Direct fit for the 2014-2019 Ford Fiesta ST |
| SellingPoint02 | Lower activation temperature allows coolant to flow through the engine earlier, maintaining lower temperatures |
| SellingPoint03 | Mishimoto thermostat activates at 160F vs. stock 207F |
| SellingPoint04 | Mishimoto Lifetime Warranty |
| SellingPoint05 | N/A |
| SellingPoint06 | N/A |
| SellingPoint07 | N/A |
| SellingPoint08 | N/A |
| SellingPoint09 | N/A |
| SellingPoint10 | N/A |
| SellingPoint11 | N/A |
| SellingPoint12 | N/A |
| SellingPoint13 | N/A |
| SellingPoint14 | N/A |
| SellingPoint15 | N/A |
| TechSpec Applications | 2014-2019 Ford Fiesta ST |
| TechSpec Chassis Codes | B3 |
| TechSpec Engine Codes | 1.6L EcoBoost |
| TechSpec Includes | (1) Mishimoto Thermostat--(1) Spring Plate--(1) Spring--(2) Rubber O-Rings--Mishimoto Lifetime Warranty |
| TechSpec Mishimoto Activation Temperature (F) | 160 |
| TechSpec Note | The installation of this thermostat requires the use of the Motorcraft RH-223 housing. The stock thermostat must be removed and the Mishimoto thermostat installed in its place. |
| TechSpec OEM Activation Temperature (F) | 207 |
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).
WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
CLOSE ✕
Subscribe to our newsletter to receive exclusive offers, product recommendations, expert tips and more.