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Mishimoto's thermostatic oil cooler kit in Stealth Black for 2014–2016 Ford Fiesta ST uses a large 19-row cooler and a thermostatic sandwich plate to manage oil temperature more precisely. The kit bypasses the stock liquid-to-liquid cooler, includes braided stainless steel lines with -10AN fittings, a CNC center bolt and coolant bypass tube, and delivered consistent temperature drops of more than 35°F in testing; the kit comes with Mishimoto's Lifetime Warranty.
Mishimoto 14-16 Ford Fiesta ST Thermostatic Oil Cooler Kit - Black
