Compatibility: Oxygen Sensor 234-4528 234-4529 is precision-built to fit your 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.) Replacement Part Number: The Front & Rear O2 Sensor Replacement for OE Number : Upstream:234-4529, 2344529, 55569903, 55572993; Downstream: 234-4528, 2344528, 55572216, 55574136 Drive Farther, Spend Less: Enjoy more miles per gallon and fewer stops at the pump! Smart sensing technology maximizes fuel efficiency and helps you save money with every drive. Built to Endure, Designed to Perform: Crafted with premium platinum and ceramic components to withstand extreme heat and pressure — ensuring long-lasting performance and peace of mind. Instant Response, Smoother Ride: Experience faster acceleration and cleaner emissions. Our sensor delivers real-time data to your engine for a smoother, more responsive ride every time you hit the road. Product Specifications:
Condition: 100% Brand New

Compatibility:
2011-2015 Cruze 1.4L
2012-2020 Sonic 1.4L
2013-2021 Trax 1.4L
2013-2021 Encore 1.4L

Reference OE:
Downstream Oxygen Sensor: 234-4528 2344528 55572216 55574136
Upstream Oxygen Sensor: 234-4529 2344529 55569903 55572993

Packaging:
1* Upstream Oxygen Sensor
1* Downstream Oxygen Sensor