{"product_id":"chawyi-o2-sensors-for-chevy-buick-234-4528-234-4529-upstream-downstream-1-4l-direct-fit-oem-tested","title":"ChawYI O2 Sensors for Chevy \u0026 Buick 234-4528\/234-4529 Upstream \u0026 Downstream 1.4L Direct-Fit OEM-Tested","description":"\u003cp\u003e\u003cstrong\u003eChawYI 234-4528 (downstream) and 234-4529 (upstream) are direct-fit oxygen sensors designed to replace the factory O2 sensors on select Chevy and Buick 1.4L models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese ChawYI oxygen sensors are built to match OEM form, fit and function for specific 1.4L engines used in Chevy Cruze, Sonic, Trax and the Buick Encore across listed model years. They carry equivalent replacement numbers (upstream: 234-4529 \/ 2344529 \/ 55569903 \/ 55572993; downstream: 234-4528 \/ 2344528 \/ 55572216 \/ 55574136) and are 100% tested to the same performance criteria used by original equipment manufacturers. The sensors come with factory-style connectors and harness lengths intended to make installation straightforward for a mechanic or an experienced DIYer.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines does this sensor fit?\u003c\/h3\u003e\n\u003cp\u003eThese ChawYI O2 sensors fit 1.4L turbocharged engines in several GM compact models. Compatibility covers model years and trims listed below, but always verify fitment for your VIN or use the seller’s fit-check tool before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuick Encore 1.4L: 2013–2021\u003c\/li\u003e\n  \u003cli\u003eChevrolet Cruze 1.4L: 2011–2015 and Cruze Limited 2016 (Eco\/LT\/LTZ)\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 upstream and downstream O2 sensors differ, and which part number do I need?\u003c\/h3\u003e\n\u003cp\u003eUpstream (pre-catalyst) sensors monitor exhaust oxygen content for fuel trim adjustments; downstream (post-catalyst) sensors monitor catalytic converter efficiency. Choosing the correct number depends on the sensor location on your vehicle’s exhaust system.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUpstream replacement: 234-4529 \/ 2344529 \/ 55569903 \/ 55572993\u003c\/li\u003e\n  \u003cli\u003eDownstream replacement: 234-4528 \/ 2344528 \/ 55572216 \/ 55574136\u003c\/li\u003e\n  \u003cli\u003eInspect the old sensor or consult service manual to confirm location before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat quality and testing standards does ChawYI use for these sensors?\u003c\/h3\u003e\n\u003cp\u003eChawYI manufactures these sensors under OEM-style processes and subjects each unit to full testing to match the acceptance criteria used by OE suppliers. That testing verifies electrical function, heater circuits and response characteristics so the unit performs predictably after installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProduced to OEM form, fit and connector specifications\u003c\/li\u003e\n  \u003cli\u003e100% functional testing against OE performance benchmarks\u003c\/li\u003e\n  \u003cli\u003eDesigned to integrate with factory wiring and engine control systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I install these O2 sensors myself, and what should I expect during replacement?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for someone with basic automotive tools and experience; upstream and downstream sensors use threaded ports and factory connectors. Allow time for the exhaust to cool, use the correct oxygen-sensor socket, and follow torque recommendations to avoid damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRequires oxygen-sensor socket or open-ended wrench and possible penetrating oil for seized threads\u003c\/li\u003e\n  \u003cli\u003eEnsure connector tabs fully engage and wiring is routed away from hot components\u003c\/li\u003e\n  \u003cli\u003eAfter installation, clear any stored codes and verify proper engine operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers and professional technicians who need a reliable, OEM-form oxygen sensor replacement for certain GM 1.4L compact vehicles. Choose ChawYI 234-4528 or 234-4529 if you want a cost-effective, fully tested sensor compatible with the listed Chevy Cruze, Sonic, Trax and Buick Encore model years, and always confirm part numbers and fitment for your specific vehicle before ordering.\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: Will these sensors fit my Chevy Cruze 2014 1.4L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—the ChawYI 234-4529 (upstream) and 234-4528 (downstream) cover Chevy Cruze 1.4L models from 2011–2015; verify by VIN or fitment tool before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these sensors tested like OEM units?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—each ChawYI oxygen sensor undergoes 100% functional testing to meet the same performance criteria used by OEM suppliers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ChawYI","offers":[{"title":"Default Title","offer_id":48086627647646,"sku":"B0CZ7C6837","price":55.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/chawyI-front-packaging-sensor.jpg?v=1785901795","url":"https:\/\/northtrailauto.ca\/products\/chawyi-o2-sensors-for-chevy-buick-234-4528-234-4529-upstream-downstream-1-4l-direct-fit-oem-tested","provider":"North Trail Auto","version":"1.0","type":"link"}