Mitsubishi Xpander Oxygen Sensor 149100-69600 1588A481 OEM Replacement Part

On Mitsubishi Xpander exhaust pipe, oxygen sensor (OEM numbers 149100-69600 and 1588A481) located before and after the catalytic converter, monitors exhaust oxygen content in real time and feeds signal to ECU to precisely control air-fuel ratio, ensuring engine efficient burning. Fits all Mitsubishi Xpander models; installation difficulty medium; expect about 30-45 minutes; avoid thread damage and protect wiring. When vehicle shows idle instability, increased fuel consumption, weak acceleration, or check engine light, oxygen sensor aging or failure is usually implied.