Oxygen Sensor for 2019-2020 Cadillac CT6 - Walker 250-241267

Keep tabs on combustion efficiency with the Walker Products oxygen sensor 250-241267, a four-wire, narrow-band, direct-fit unit that drops into the 2019-2020 Cadillac CT6 at the downstream left and downstream right positions. It measures the amount of oxygen in the exhaust gas, reporting combustion efficiency back to the ECU so the engine management system can fine-tune the air-fuel ratio.

• Gas-permeable platinum electrodes: coated with a gas-permeable platinum layer to read oxygen content.
• Protective coating: helps guard the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust.
• Emissions monitoring: monitors exhaust gases to help reduce pollutants and support normal fuel economy.
• Application-specific direct fit: built as an OE-replacement for the specific vehicle application and fitment position.

A failing sensor may store a fault code and can cause the engine to run poorly, increase fuel consumption, raise emissions, or illuminate the malfunction indicator light (MIL). If a faulty oxygen sensor is the cause, this replaces it — inspect the sensor, wiring harness, and connector for physical damage before installing.