{"product_id":"fronezer-2pcs-oxygen-sensor-234-4528-234-4529-upstream-downstream-sensor-set-for-chevy-cruze-sonic-trax-buick-encore","title":"FRONEZER 2PCS Oxygen Sensor 234-4528\/234-4529 — Upstream \u0026 Downstream Sensor Set for Chevy Cruze\/Sonic\/Trax \u0026 Buick Encore","description":"\u003ch2\u003eUpgrade your GM 1.4L engine sensors with FRONEZER\u003c\/h2\u003e\n\u003cp\u003eIf you notice rough idling, uneven acceleration, or shifts in exhaust behavior, a reliable oxygen sensor can help your engine breathe more cleanly. FRONEZER’s 2PCS Oxygen Sensor set provides upstream and downstream coverage designed to fit a range of 1.4L GM models, combining durable materials with precise sensing to support smooth operation over time.\u003c\/p\u003e\n\u003cp\u003eThis pair is built to support compatibility across multiple models, including the Chevy Cruze, Sonic, Trax, and Buick Encore. The sensors work together to monitor exhaust oxygen levels, a critical part of how your engine determines the air-fuel mix during different driving conditions. While benefits vary by vehicle and driving style, the sensors are designed to offer dependable sensing and long-lasting performance.\u003c\/p\u003e\n\u003ch3\u003eFitment you can rely on\u003c\/h3\u003e\n\u003cp\u003eThe Upstream sensor is matched to 234-4529, while the Downstream sensor carries 234-4528. This duo is intended for the following models: 2011-2016 Chevy Cruze 1.4L Eco \/ LT \/ LTZ; 2012-2020 Chevy Sonic 1.4L; 2013-2021 Chevy Trax 1.4L; and 2013-2021 Buick Encore 1.4L. Note that some 1.4L engines within these families use different configurations; please refer to the main image for detailed fitment notes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUpstream: 234-4529\u003c\/li\u003e\n  \u003cli\u003eDownstream: 234-4528\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePremium build for lasting performance\u003c\/h3\u003e\n\u003cp\u003eEach sensor features a robust stainless steel exterior with a ceramic sensing element. This combination provides resistance to heat and corrosion, helping extend service life in typical driving environments and under varying exhaust temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeat resistant and corrosion protected\u003c\/li\u003e\n  \u003cli\u003eDurable, long-lasting construction for daily driving and more demanding use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePrecise detection for better engine management\u003c\/h3\u003e\n\u003cp\u003eAccurate measurement of exhaust oxygen helps the vehicle’s ECU tune the air-fuel ratio. The result can be smoother idling, steadier acceleration, and more consistent engine response across conditions, without implying guaranteed outcomes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAccurate sensing supports balanced air-fuel tuning\u003c\/li\u003e\n  \u003cli\u003ePotential for more predictable performance and efficiency under real-world use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-world use and installation notes\u003c\/h3\u003e\n\u003cp\u003eIdeal for drivers performing routine maintenance or sensor replacement on compatible GM models. Benefits described here reflect the sensor’s sensing quality and durable construction, not a promise of specific results. Always verify fitment using the main image and model year details before installation.\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 is this oxygen sensor set compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits 2011-2016 Cruze 1.4L, 2012-2020 Sonic, 2013-2021 Trax, and Buick Encore 1.4L; check the main image for full fitment notes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What benefits can I expect from FRONEZER O2 sensors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Premium stainless steel and ceramic construction offer heat resistance and durability; precise oxygen monitoring helps the ECU tune the air-fuel ratio for smoother idle and potentially better efficiency.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FRONEZER","offers":[{"title":"Default Title","offer_id":42470315556949,"sku":"B0FSD518V6","price":48.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/fronezer-upstream-oxygen-sensor-234-4529.jpg?v=1778129010","url":"https:\/\/plentytorque.co.uk\/products\/fronezer-2pcs-oxygen-sensor-234-4528-234-4529-upstream-downstream-sensor-set-for-chevy-cruze-sonic-trax-buick-encore","provider":"PlentyTorque","version":"1.0","type":"link"}