【Fitment】Oxygen Sensor Upstream Downstream Compatible With 2011-2015 Chevy Cruze 1.4L L4 Eco / LT /LTZ, 2016 Chevy Cruze Limited 1.4L Eco / LT /LTZ, 2012-2020 Chevy Sonic 1.4L L4, 2013-2021 Chevy Trax 1.4L L4 （Not Fit 2021 L4 1.4L 1399cc 85in³), 2013 - 2021 Buick Encore 1.4L like it came straight from the factory.(Note：The Chevy Cruze Sonic Trax and BUICK Encore have two types of 1.4L engines. 1.4L Engine only for 1364cc 83ci MFI, not suitable for 1399cc DI.)(Please refer to the main image for more detailed information on the vehicle model)
【Replace part number】The Upstream Downstream O2 Sensor Replacement for OE Number : Upstream:234-4529, 2344529, 55569903, 55572993; Downstream: 234-4528, 2344528, 55572216, 55574136.
【Premium-Grade Construction】Made of high-quality stainless steel and ceramic materials for excellent heat resistance, corrosion protection, and long-lasting durability.
【Enhanced Engine Performance】Ensures optimal combustion, smoother acceleration, and stable idling — reducing emissions and restoring your vehicle’s power output.
【Accurate Air-Fuel Ratio Detection】Precisely monitors oxygen levels in the exhaust gases to help the ECU maintain an ideal air-fuel ratio, improving fuel efficiency and engine performance.
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