3rd Generation Optima (2011 - 2015)
I have a 2014 Optima EX and was looking over my engine and wanted to double check on the item that I've posted in the picture. I'm thinking it's the O2 Sensor, is that correct? What is the suggested mileage to change out the O2 Sensor on the Optima? I've read between 50-60,000 miles, but have...