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Ford Fiesta ST Racing Thermostat, 2014–2019

Ford Fiesta ST Racing Thermostat, 2014–2019
Ford Fiesta ST Racing Thermostat, 2014–2019

Regular Price: $62.40

Sale Price $49.95

Bread Checkout
Installation Difficulty

  • Direct fit for the 2014–2019 Ford Fiesta ST
  • Lower activation temperature allows coolant to flow through the engine earlier, maintaining lower temperatures
  • Mishimoto thermostat activates at 160°F vs. stock 207°F
  • Mishimoto Lifetime Warranty

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 Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.

For our complete warranty policy, please click here.



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.

OEM Activation Temp C 97°C

OEM Activation Temp F 207°F

Purchase Includes (1) Mishimoto Thermostat
(1) Spring Plate
(1) Spring
(2) Rubber O-Rings
Mishimoto Lifetime Warranty

Engine Codes 1.6L EcoBoost

Chassis Codes B3

Fits 2014–2019 Ford Fiesta ST

Mishimoto Activation Temp (Fahrenheit) 160°F

Mishimoto Activation Temp (Celsius) 71°C


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