奥迪氧传感器 078906265M 0258006287 直接更换无误差

Audi oxygen sensor 078906265M directly replaces OEM 0258006800, compatible with 06A906262DC, 0258006802/803, broad compatibility; equipped for A4, A6, Q5 with 1.8T or 2.0T engines. Core function: monitor exhaust oxygen content and send signal to ECU to adjust air-fuel ratio; reduces fuel consumption, accelerates power delivery, and lowers emissions. If idle is unstable, engine fault light on, or fuel consumption suddenly increases, sensor aging is the typical cause.