Mishimoto's thermostatic oil cooler kit for 2014–2016 Ford Fiesta ST pairs a 19-row cooler with a thermostatic sandwich plate to reduce oil temperatures while allowing controlled flow based on oil temperature. The kit includes application-specific braided stainless lines with -10AN fittings, a CNC center bolt, an aluminum coolant bypass tube to remove the stock unit, and offers consistent temperature reductions of over 35°F in testing plus the Mishimoto Lifetime Warranty.
Mishimoto 14-16 Ford Fiesta ST Thermostatic Oil Cooler Kit - Silver