雪佛兰凯迪拉克ATS 2013-2018 空燃比传感器 234-4763，稳定信号输出

Is your vehicle showing rough idle, weak acceleration, or elevated fuel consumption with the check engine light on? This typically means the air–fuel ratio sensor is aging and cannot accurately monitor oxygen in the exhaust, causing mixture imbalance. This sensor, when working properly, provides real-time feedback of the air–fuel ratio to the ECU to ensure efficient combustion, lower fuel consumption, and reduced emissions. Compatible with Chevrolet Cadillac ATS 2013-2018 (OEM 234-4763), compatible with 12627139, 12645561, 12655677, 12627140. Install only when the engine is cold; after removing the old sensor, clean threads and apply anti-seize to prevent leaks; tighten to standard torque to prevent leaks.