[INNOVATIVE TECHNOLOGY] - Every Bosch Oxygen Sensor benefits from the technological and manufacturing experience gained from decades of production since first inventing the Oxygen Sensor in the late 1960's, ensuring long-lasting performance [FACTORY TESTED] - Each sensor meets Bosch's rigorous standards for quality and performance and undergoes a fully functional quality test before leaving the factory to ensure operation within design specifications [STAINLESS STEEL BODY] - Stainless steel body is totally submersible and sealed tight to protect against damage from exhaust emissions - ensuring longer sensor service life [FAST ACTING HEATER] - Fast-acting heater optimizes sensor operation on Planar and 3, 4, and 5 wire Thimble type sensors allowing the oxygen sensor to reach its operating temperature quicker - within seconds - for optimum performance [READY TO INSTALL] - True Direct-fit OE connectors and harnesses, along with threads pre-coated with anti-seize compound right out of the box, make installation simple and hassle-free; Replaces the following Original Equipment part number: 12657188 Compatible with select vehicles (Note: Engine affects fitment - verify specific vehicle fitment details, including sensor position, with fit checker above): BUICK: 2016-20 Envision, 2014-17 Regal, 2018-20 Regal Sportback, 2018-20 Regal TourX Compatible with (continued): CADILLAC: 2017-19 CTS, 2015-20 Escalade, 2015-20 Escalade ESV; CHEVROLET: 2019-21 Blazer, 2017-23 Camaro, 2018-20 Equinox, 2016-20 Express 2500, 2016-20 Express 3500, 2016-20 Express 4500, 2014-19 Impala Compatible with (continued): CHEVROLET: 2018-20 LCF 3500, 2013-17,2019-22 Malibu, 2016 Malibu Limited, 2014-18 Silverado 1500, 2019 Silverado 1500 LD, 2016-19 Silverado 2500 HD, 2016-19 Silverado 3500 HD, 2015-20 Suburban Compatible with (continued): CHEVROLET: 2016-19 Suburban 3500 HD, 2015-20 Tahoe, 2019 Traverse; GMC: 2017-21 Acadia, 2016-20 Savana 2500, 2016-20 Savana 3500, 2017-20 Savana 4500, 2014-18 Sierra 1500, 2019 Sierra 1500 Limited Compatible with (continued): GMC: 2016-19 Sierra 2500 HD, 2015-19 Sierra 3500 HD, 2018-20 Terrain, 2015-20 Yukon, 2015-20 Yukon XL