Toyota Allion Premio Oxygen Sensor 89465-20890 Direct Fit Plug and Play

This oxygen sensor directly replaces OE 89465-20890, a direct plug-and-play universal part. It monitors oxygen content in exhaust and feeds ECU to adjust air-fuel ratio for combustion efficiency. Fits Toyota Allion and Premio; after installation, resolves high fuel consumption, unstable idle, or weak acceleration. If check engine light comes on, exhaust odor increases, or fuel consumption rises, oxygen sensor aging is likely; replace promptly.