4pcs Upstream+Downstream Oxygen O2 Sensor For Ford Explorer Flex Taurus NO Turbo

4PCS Oxygen Sensor Up+Downstream For 2013-2015 Ford Explorer Flex Taurus 3.5L V6

4pcs Upstream+Downstream Oxygen O2 Sensor For Ford Explorer Flex Taurus NO Turbo

4Pcs Upstream & Downstream O2 Oxygen Sensor For 2011-2012 Ford Taurus 3.5L V6 US

4PCS Upstream+Downstream Oxygen Sensor For 2016-2019 Ford Explorer Flex 3.5L V6