{"product_id":"tautoy-o2-oxygen-sensor-kit-for-1-4l-buick-chevrolet-upstream-downstream-oem-fit","title":"TAUTOY O2 Oxygen Sensor Kit for 1.4L Buick \u0026 Chevrolet — Upstream + Downstream, OEM Fit","description":"\u003cp\u003e\u003cstrong\u003eTAUTOY O2 Oxygen Sensor Upstream and Downstream 1.4L is a two-piece replacement kit engineered to restore accurate air-fuel monitoring for compatible 1.4L Buick and Chevrolet models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your check engine light, fuel economy, or emissions readings point to oxygen sensor issues, this TAUTOY pair gives you both upstream (pre-cat) and downstream (post-cat) sensors matched to the original equipment specifications. Each sensor is designed to meet OEM fitment numbers and provide the precise voltage and response drivers expect for 1.4L turbocharged engines.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles will these TAUTOY O2 sensors fit?\u003c\/h3\u003e\n\u003cp\u003eThese sensors are manufactured to match specific model years and engine sizes. They fit a range of Buick and Chevrolet models that use the 1.4L engine, covering many common trim levels and calendar years.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuick Encore 1.4L: 2013–2021\u003c\/li\u003e\n  \u003cli\u003eChevrolet Cruze 1.4L Eco\/LT\/LTZ: 2011–2015 and 2016 (Cruze Limited)\u003c\/li\u003e\n  \u003cli\u003eChevrolet Sonic 1.4L: 2012–2020\u003c\/li\u003e\n  \u003cli\u003eChevrolet Trax 1.4L: 2013–2021\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these sensors match the original equipment numbers?\u003c\/h3\u003e\n\u003cp\u003eTAUTOY lists the OEM cross-reference part numbers to help you verify compatibility before purchase. The listing includes multiple manufacturer codes and part variants commonly referenced by mechanics and parts catalogs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUpstream sensor references: 234-4529, 2344529, 55569903, 55572993\u003c\/li\u003e\n  \u003cli\u003eDownstream sensor references: 234-4528, 2344528, 55572216, 55574136\u003c\/li\u003e\n  \u003cli\u003eIncludes one upstream and one downstream sensor in the kit (2 PCS total)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and construction features should I expect?\u003c\/h3\u003e\n\u003cp\u003eThese sensors are built with corrosion-resistant materials and modern joining methods to improve durability in high-heat exhaust environments. The sensors are designed to deliver accurate oxygen partial pressure readings that help the engine control unit (ECU) adjust fuel trims appropriately.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble laser-welded stainless steel housing for longevity\u003c\/li\u003e\n  \u003cli\u003eHigh-precision sensing element for accurate air-fuel ratio feedback\u003c\/li\u003e\n  \u003cli\u003eManufactured to provide stable response under typical driving conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what should I prepare?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable working under the vehicle and unplugging electrical connectors. Basic hand tools and a proper oxygen sensor socket will usually complete the job; if unsure, a professional mechanic can install the sensors in under an hour on most cars.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes two sensors: upstream (pre-catalytic converter) and downstream (post-catalytic converter)\u003c\/li\u003e\n  \u003cli\u003eRecommended tools: oxygen sensor socket, ratchet, penetrating oil for seized fittings\u003c\/li\u003e\n  \u003cli\u003eClear check-engine codes and test drive to confirm proper operation after fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This TAUTOY O2 sensor kit is intended for owners and mechanics who need a direct-fit replacement for 1.4L Buick Encore and select Chevrolet Cruze, Sonic, and Trax models. It suits drivers troubleshooting emissions or fuel-trim faults, garages stocking OEM-referenced parts, and DIYers seeking a paired upstream\/downstream solution backed by a one-year warranty.\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: Do these sensors come as a matched pair?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes one upstream (234-4529) and one downstream (234-4528) sensor for a complete replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is there a warranty with this TAUTOY O2 sensor kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. TAUTOY provides a 1-year warranty covering manufacturing defects for these sensors.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TAUTOY","offers":[{"title":"Default Title","offer_id":67589806031033,"sku":"B0F8Q3FWG3","price":79.64,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/tautoy-upstream-downstream-packaging.jpg?v=1790532259","url":"https:\/\/redleafauto.ca\/products\/tautoy-o2-oxygen-sensor-kit-for-1-4l-buick-chevrolet-upstream-downstream-oem-fit","provider":"Redleaf Auto","version":"1.0","type":"link"}