Ford OEM – (Front) O₂ Sensor – 2014-2019 Fiesta ST
This is a genuine Ford OEM upstream oxygen sensor designed specifically for the 2014–2019 Fiesta ST 1.6L EcoBoost.
The upstream O2 sensor plays a critical role in real-time air/fuel ratio monitoring before the catalytic converter. Accurate readings are essential for proper fueling, drivability, and engine protection, especially on tuned vehicles.
Common signs of failure:
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Check engine light
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Rough idle
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Poor fuel economy
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Inconsistent fueling under boost
This sensor features factory-correct connector, wiring length, and calibration for seamless plug-and-play installation.
Fitment:
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2014–2019 Ford Fiesta ST 1.6L EcoBoost
Need help with installation?
If you’d like to schedule an O2 sensor install, give us a call at (423) 500-4901 or email sales@emsinc-tn.com and we’ll get you set up.
Why EMS?:
We source this part directly from Ford OEM channels—no aftermarket knockoffs. You get factory specs, reliable performance, and total fitment confidence.

Call us (423) 500-4901 or
Email us at sales@emsinc-tn.com
WWW.EMSINC-TN.COM








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