Original, dealership-grade oxygen sensor. A while ago, the engine light came on. After diagnosis, they said it was the oxygen sensor. I bought a dealership-grade one, but after some repairs, the problem disappeared without needing to replace the sensor. I guarantee it's dealership-grade and completely unused. Its price at the dealership is around 1000, go and verify yourself. The price is negotiable, my limit is 800 riyals ❣