Kwiksen Upstream AFR Air Fuel Ratio Oxygen O2 Sensor Replacement for Accent L4 1.6L 2012 2013 2014 2015 2016

The part looks high quality, installed without issues but only lasted 2 months, support was great and provided a refund at no time as bought the original from the dealer after as i needed the car right away up and running, this seller is amazing, i used this brand in the past for another car but did not have issues with it, maybe just was unlucky, when the sensor died, i drove my car around 300 miles with check engine light on (o2 sensor open circuit), this made the car to run richand threw a code "cat below efficiency" due to black gunk generated in the exhaust due to rich condition as the sensor failed on me, so i ended up washing the exhaust to clean the cat from the inside out and disconnecting the downstream sensor, after that, reinstalled everything and cleared up the codes, drove it at high RPMS 4k-5k for 120 miles and all emissions test went "complete" and all good after 1000 miles. I will buy again from this seller as it stand up for the their customers, i was just unlucky.

Didn't clear bank 1 upstream o2 sensor code, buy OEM hard pass on this brand

Good product great price.