{"product_id":"standard-sg2103t-oxygen-sensor-rear","title":"Standard SG2103T Oxygen Sensor - Rear","description":"\u003ch2\u003eHeated Rear Oxygen Sensor for GM Applications\u003c\/h2\u003e\u003cp\u003eThe Standard SG2103T is a heated rear oxygen sensor built for direct replacement in a wide range of Chevrolet, GMC, Buick, and Cadillac applications. It is used to monitor exhaust oxygen content after the catalytic converter, supporting accurate fuel control and emissions system feedback.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for rear position applications\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement for select GM vehicles\u003c\/li\u003e\n\u003cli\u003eSupports emissions monitoring after the catalytic converter\u003c\/li\u003e\n\u003cli\u003eCross-references GM OE part number 12643903\u003c\/li\u003e\n\u003cli\u003eStandard SG2103T fitment spans 2013-2021 model years\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2019-2021 Chevrolet Blazer, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2017-2021 GMC Acadia, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2020 Buick Envision, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2018-2020 Buick Regal Sportback, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2018-2020 Buick Regal TourX, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2015-2020 Cadillac Escalade, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2015-2020 Cadillac Escalade ESV, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2018-2020 Chevrolet Equinox, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2020 Chevrolet Express 2500, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2020 Chevrolet Express 3500, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2015-2020 Chevrolet Tahoe, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2020 GMC Savana 2500, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2020 GMC Savana 3500, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2018-2020 GMC Terrain, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2015-2020 GMC Yukon, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2015-2020 GMC Yukon XL, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2019 Buick Cascada, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2014-2019 Chevrolet Impala, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2013-2019 Chevrolet Malibu, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2014-2019 Chevrolet Silverado 1500, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2019 Chevrolet Silverado 1500 LD, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2019 Chevrolet Silverado 2500 HD, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2019 Chevrolet Silverado 3500 HD, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2019 Chevrolet Suburban 3500 HD, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2018-2019 Chevrolet Traverse, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2014-2019 GMC Sierra 1500, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2019 GMC Sierra 1500 Limited, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2019 GMC Sierra 2500 HD, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2016-2019 GMC Sierra 3500 HD, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2014-2017 Buick Regal, Rear\u003c\/li\u003e\n\u003cli\u003eFits 2014-2016 Chevrolet Corvette, Rear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat This Sensor Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light related to rear oxygen sensor performance\u003c\/li\u003e\n\u003cli\u003eIncorrect exhaust oxygen readings after the catalytic converter\u003c\/li\u003e\n\u003cli\u003eFuel trim or emissions monitor faults tied to sensor output\u003c\/li\u003e\n\u003cli\u003eSlow sensor response from a worn heated oxygen sensor\u003c\/li\u003e\n\u003cli\u003eDiagnostic trouble codes associated with rear O2 sensor circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the connector style, sensor location, and engine application before installation. This rear oxygen sensor is intended for the listed Chevrolet, GMC, Buick, and Cadillac fitments, including Silverado 1500, Sierra 1500, Malibu, and Equinox applications. Follow factory service procedures for removal, routing, and torque specifications.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eStandard replacement sensor engineered for OE-style fit and function in the listed applications. This part cross-references GM OE part number 12643903 for the same application.\u003c\/p\u003e","brand":"Standard","offers":[{"title":"Default Title","offer_id":52865135083701,"sku":"FBFS-SG2103T","price":65.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/TT_SG2103T_Fro.jpg?v=1785048624","url":"https:\/\/www.partcatalog.com\/products\/standard-sg2103t-oxygen-sensor-rear","provider":"PartCatalog","version":"1.0","type":"link"}