{"product_id":"tautoy-234-4668-234-4256-oxygen-sensor-kit-4pcs-upstream-downstream-for-cadillac-escalade-chevy-silverado-2008-2014","title":"TAUTOY 234-4668 \u0026 234-4256 Oxygen Sensor Kit — 4Pcs Upstream\/Downstream for Cadillac Escalade \u0026 Chevy Silverado (2008-2014)","description":"\u003ch2\u003eTAUTOY 4-Piece Oxygen Sensor Kit: Upstream and Downstream Coverage\u003c\/h2\u003e\n\u003cp\u003eUpgrade your vehicle's exhaust sensing with the TAUTOY 4-piece oxygen sensor kit, engineered for reliability across a range of GM trucks and SUVs from 2008 through 2014. This kit brings two upstream sensors and two downstream sensors designed to integrate with the factory harness and control module, delivering steady electrical signals that support accurate readings of the oxygen levels in the exhaust stream. The sensors are built to withstand high heat, road grime, and vibration, delivering consistent performance even on daily commutes or longer trips.\u003c\/p\u003e\n\u003cp\u003eTwo upstream sensors (part numbers 234-4668) monitor the air-fuel mixture upstream of the catalytic converter, while two downstream sensors (part numbers 234-4256) help verify converter efficiency further along the exhaust path. This pairing is intended to provide complete coverage where your engine management system relies on feedback to regulate ignition timing, fuel trim, and emissions-related feedback loops.\u003c\/p\u003e\n\n\u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUpstream sensors x2 — 234-4668\u003c\/li\u003e\n  \u003cli\u003eDownstream sensors x2 — 234-4256\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBroad compatibility and OEM references\u003c\/h3\u003e\n\u003cp\u003eTAUTOY’s O2 sensor kit is designed to fit Cadillac Escalade and Escalade ESV models (2009–2014), plus a broad lineup of Chevrolet and GMC trucks and SUVs including Avalanche, Silverado 1500\/2500\/3500, Suburban, Sierra, Yukon, and Tahoe in various trims. The package lists multiple OEM part numbers to aid cross-reference checks, highlighting the product’s intent to align with a wide ecosystem of original equipment references. Notable numbers mentioned include 234-4668 and 234-4256, along with numerous cross-reference codes such as 12596558, 12596701, 213-4229, and 213-3866, among others. If you’re comparing parts, this broad set of references can help you confirm fitment for your specific year and model.\u003c\/p\u003e\n\n\u003ch3\u003eTips for installation and use\u003c\/h3\u003e\n\u003cp\u003eInstall by a qualified technician or an experienced do-it-yourselfer with basic automotive electrical familiarity. The upstream and downstream sensors plug into the same sensor harness points used by the original parts, and the kit’s two-by-two configuration is designed to simplify replacement. Expect gradual improvements in how the engine control unit reads the exhaust conditions, though results can vary with vehicle condition and driving style.\u003c\/p\u003e\n\n\u003ch3\u003ePossible benefits you may notice\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEnhanced oxygen sensing consistency that supports the engine control system.\u003c\/li\u003e\n  \u003cli\u003eBetter alignment of fuel trims across varying driving conditions.\u003c\/li\u003e\n  \u003cli\u003eClearer feedback loops for emissions-related diagnostics, potentially aiding maintenance readiness.\u003c\/li\u003e\n  \u003cli\u003eBroad compatibility with a wide range of GM models, simplifying sourcing for future needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and support\u003c\/h3\u003e\n\u003cp\u003eTAUTOY backs this kit with a 1-year warranty, reflecting confidence in the build and a commitment to customer support if you encounter installation or compatibility questions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which vehicles are compatible with this 4-piece oxygen sensor kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits Cadillac Escalade\/ESV (2009-2014) and various Chevy\/GMC trucks and SUVs; verify with the OEM references listed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What’s included in the kit and how many sensors are there?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Includes two upstream 234-4668 sensors and two downstream 234-4256 sensors; four sensors total.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TAUTOY","offers":[{"title":"Default Title","offer_id":42480865411157,"sku":"B0CXDZBQTH","price":55.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/tautoy-oxygen-sensor-upstream-2344668-cadillac.jpg?v=1778337866","url":"https:\/\/plentytorque.co.uk\/products\/tautoy-234-4668-234-4256-oxygen-sensor-kit-4pcs-upstream-downstream-for-cadillac-escalade-chevy-silverado-2008-2014","provider":"PlentyTorque","version":"1.0","type":"link"}