2015 Kia Optima O2 Sensor Replacement

This video will show you how to replace the O2 sensor in your Kia Optima. This should be the same for all gen 4 Kia Optima’s from 2011 to 2015.
Torq Spec for the O2 sensors are as follow:
All specs were taken from the Kia Optima Manual
Upstream sensor - 29 to 36 foot pounds
Downstream sensor - 26 to 33 foot pounds