Oxygen O2 Sensor Upstream Downstream 2Pcs Compatible with Hyundai T... Fast Ship About this item ?PREMIUM DURABILITY? Long life-span matters, that is why our oxygen sensors are made of high temperature corrosion resistant material with a double laser-welded stainless steel body is totally submersible to seal tight for long life ?FUNCTION? A defective or sluggish oxygen sensor can cause a variety of issues, like decreased engine performance. This oxygen sensor will accurately detect the mixture of air and fuel, helps ensure your engine is constantly monitored and operating efficiently, while maximizing performance ?REPLACES#? Upstream: 234-5029, 39210-2G100. Downstream: 234-4238, 39210-2G200, 39210-2C210. Replace the sensor in a timely manner to avoid potential engine failures such as unstable engine operation, low-speed shaking or loss of power ?FITMENT? Compatible with Hyundai: 2011-2014 Tucson 2.0L, 2010-2013 Tucson 2.4L, 2009-2011 Sonata 2.4L, 2010-2015 Santa Fe 2.4L; Compatible with KIA: 2010-2013 Forte 2.0L 2.4L, 2012-2013 KIA Forte5 2.0L 2.4L, 2010-2013 Forte Koup 2.0L 2.4L, 2011-2012 Optima 2.4L, 2009-2012 Rondo 2.4L, 2011-2015 Sorento 2.4L, 2011-2014 Sportage 2.4L ?HQPASFY? "High Quality Product And Service For You" has always been our goal. We always stand behind our products, if you have any questions about O2 sensor, please feel free to contact us, we will be glad to assist you