Toyota Tundra Rear Oxygen Sensor 89465-0C190 Precise Match

When your Toyota Tundra shows check engine light, abnormal fuel consumption, weak acceleration, or rough idle, likely rear oxygen sensor aged or failed; monitors exhaust oxygen content and feeds ECU to adjust fuel injection for combustion efficiency and emissions. OEM 89465-0C190; precisely matches Toyota Tundra model; before installation ensure engine is cool, disconnect negative battery, use a dedicated socket to remove old sensor to avoid thread or harness damage.