Description

  This upstream oxygen (O₂) sensor is designed to meet or exceed OEM specifications for 2013–2021 Buick, 2014–2015 Cadillac, and 2011–2020 Chevrolet vehicles . Installed before the catalytic converter, the upstream O₂ sensor monitors the exhaust gases and provides critical data to the engine control unit (ECU) for optimal air-fuel mixture and emissions control. A failing upstream O2 sensor can trigger check engine lights, reduce fuel efficiency, increase emissions, or cause rough engine performance. Replacing the sensor restores accurate exhaust readings, improves fuel economy, and ensures efficient engine operation. Constructed with durable, OEM-quality materials, it features a direct-fit, plug-and-play design for simple installation. Key Features & Benefits Genuine OEM-equivalent Upstream O2 Sensor Monitors exhaust gases for precise air-fuel mixture control Restores engine performance and fuel efficiency Reduces emissions and prevents drivability issues Durable, heat- and corrosion-resistant construction Direct-fit, plug-and-play replacement Engine Compatibility Compatible with gasoline engines in Buick, Cadillac, and Chevrolet vehicles (verify engine code for exact fit) Vehicle Applications Buick: 2013–2021 Cadillac: 2014–2015 Chevrolet: 2011–2020 Frequently Asked Questions Q1: What is an upstream O₂ sensor? A: An upstream oxygen sensor is installed before the catalytic converter and monitors exhaust gases for precise air-fuel mixture control. Q2: Will this sensor fit my vehicle? A: This sensor fits 2013–2021 Buick, 2014–2015 Cadillac, and 2011–2020 Chevrolet models. Verify your engine code for exact fitment. Q3: What are the symptoms of a bad upstream O₂ sensor? A: Check engine light, poor fuel economy, rough idling, and failed emissions tests. Q4: Is this an OEM or aftermarket part? A: This is a high-quality OEM-equivalent sensor designed to meet or exceed factory specifications. Q5: Is installation difficult? A: No programming is required; it is a direct-fit, plug-and-play replacement.