Mishimoto Racing Thermostat Ford Fiesta ST 2014-2016

46 In stock
Cooling Thermostats

Get up to $1.14 in Build Bux by becoming a member
$69.49 $56.95

WTF are Build Bux?
Part: # MMTS-FIST-14

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.


  • Direct fit for the 2014+ 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


Any returns for an exchange or refund will be allowed within 30 days from the receipt of your order and must be authorized prior to shipping with an RMA Number (Return Merchandise Authorization). To receive your return instructions and RMA# please use our online form under Returns and Exchanges! Once you receive your return instructions please ship out the item at your earliest convenience and provide the tracking number to your customer service rep. The customer will be responsible for all shipping fees. Before shipping your product back please make sure you package it up exactly how you received it and in all of its original packaging. All items must be in brand new and resalable condition. Once the item is received it will be inspected and a credit will be issued accordingly. All returns are subject to a 15% restocking fee. Any returns received without an RMA# will be charged a restocking fee and any shipping fees associated with the return. An item that does not ship directly from IIR's warehouse is considered a "special order" item and no returns will be authorized.

Mishimoto Racing Thermostat Ford Fiesta ST 2014-2016
You have successfully subscribed!
This email has been registered