Oxygen Sensor 226A0-EN21A 234-4381 22690-CJ00A Multi-Model Compatible

This oxygen sensor for multiple Nissan/Infiniti models uses OEM numbers 226A0-EN21A, 234-4381, and 22690-CJ00A; confirm by matching to the vehicle connector. It uses high-temperature ceramic elements and corrosion-resistant stainless steel housing; thermal cycling stability and durability meet OEM standards; monitors exhaust oxygen and feeds ECU to adjust air-fuel ratio, crucial for fuel economy and emissions control. Installation difficulty is medium; requires removal of exhaust pipe nearby; use a dedicated socket to avoid wire tension.