New Genuine OEM Works on 2014-2020 Commander and Commander Max (2011-2013 Do not have a oxygen sensor) 2013-2018 Maverick and Maverick Max 2017-2020 Maverick X3 and Maverick X3 Max 2018-2020 Maverick Trail 2019-2020 Maverick Sport 2017-2020 Defender and Defender Max If your machine has ECO mode it will have a oxygen Sensor from factory Part number 707600872