Replace Upstream O2 Oxygen Sensor - Ford E150

Hi Motorheads, we are replacing the Upstream O2 Oxygen sensor on this 2014 Ford E150. Very little tools are needed. The O2 sensors help monitor the emissions system in your vehicle. Why are O2 sensors needed? Well, check this short Short.
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[@robertrichmond4454]

Very helpful. Thank you.

[@Godisgood13208]

What size wrench would be used??? If you do not have 02 wrench ..7/8??