12" O2 EXTENSION HARNESSES - Qty 2 - Fits 2014-2022 Trucks & SUVs Compatible with LT Gen V series engines with 4-wire dark gray style connectors. Also fits some of the new LT models O2 sensors. Check your connector ends and keying to make sure they fit correctly. - Fits the following models (Gasoline 5.3L and 6.2L V8 applications only): ESCALADE 2015-2020, EXPRESS 2500 2016-2020, EXPRESS 3500 2016-2020, EXPRESS 4500 2016-2019, SILVERADO 1500 2014-2019, SUBURBAN 2015-2020, TAHOE 2015-2020, SAVANA 2500 2016-2020, SAVANA 3500 2016-2020, SAVANA 4500 2016-2019, SIERRA 1500 2014-2018, YUKON 2015-2020, YUKON XL 2015-2020