QIYBONE 4PCS O2 Oxygen Sensor Kit for 3.6L V6 Chevy/GMC/Buick/Cadillac (234-4565/234-4566) OEM-fit, Stainless Steel

QIYBONE 4-piece oxygen sensor kit replaces upstream and downstream O2 sensors (234-4565, 234-4566) to restore accurate air-fuel readings for 3.6L Chevy, GMC, Buick and Cadillac models from 2012–2020.

If your vehicle is running rich or lean, or your check engine light points to an oxygen-sensor fault, this QIYBONE 4PCS O2 sensor set is built to match OEM fit and function. Each sensor is constructed with stainless-steel housings and high‑temperature materials to withstand exhaust conditions while delivering fast, stable feedback to the engine control module. The kit includes both upstream (pre-catalytic converter) and downstream (post-catalytic converter) sensors for a full system refresh on compatible 3.6L V6 models.

Which models and years are these sensors compatible with?

These sensors are tailored for a range of GM vehicles with the 3.6L engine. Confirm fitment by matching the part number and connector style to your existing sensor before ordering.

• Chevrolet: Caprice 2012–2017, Colorado 2015–2016, Impala 2014–2020, Traverse 2012–2017
• GMC: Acadia 2012–2016, Canyon 2015–2016
• Buick Enclave 2012–2017 and Cadillac XTS 2013–2019
• Reference OE numbers: 234-4565, 234-4566 and compatible cross-reference numbers

How do these sensors improve engine performance and efficiency?

Oxygen sensors monitor exhaust oxygen content so the engine computer can adjust the air-fuel ratio. Responsive, accurate sensors help maintain efficient combustion, reduce unnecessary fuel use, and support emissions control systems.

• Faster response time gives the ECU accurate data for fuel trims
• Helps prevent excessive fuel consumption from poor air-fuel mixtures
• Supports catalytic converter efficiency by providing correct feedback

Are these sensors durable and easy to install?

QIYBONE sensors are manufactured with durable stainless steel and heat-resistant internals. They come in OEM-style housings and use factory-type electrical connectors for a straightforward, bolt-in replacement.

• Robust stainless-steel construction with protective sealing
• High-temperature materials resist exhaust heat and contaminants
• Plug-and-play connectors and OE thread size for quick installation

What reference numbers and part cross-references does the kit cover?

This set matches several common OE and aftermarket references so you can verify compatibility against your vehicle’s fault code or original sensor part number.

• Includes compatibility with part numbers 234-4565 and 234-4566
• Also cross-references to numbers like 250-24773, 350-34003, ES20113 and others
• Always compare the connector and thread to the original sensor before installing

Who this kit is for: Drivers and DIY mechanics who own GM vehicles with the 3.6L V6 and need a complete upstream/downstream oxygen sensor replacement—especially those troubleshooting O2-related check-engine codes or restoring fuel economy and emissions performance. This QIYBONE 4PCS kit is suited for shop technicians and home installers who prefer an OEM-style, cost-effective set that covers the common sensor positions on Chevy, GMC, Buick and Cadillac models from 2012 through 2020.