Peace, mercy, and blessings of God be upon you. It comes with its invoice from Bassam Jassim Al-Humaidan Trading Establishment. The part is original, agency-approved, guaranteed to be 100% working. The error was from the technician who told me it was the oxygen sensor and we changed it. It turned out the first one was working fine and the problem was with the throttle body and VVT. However, it could not be returned from the establishment as it is an electrical part that was only installed. Note: It has served its purpose or can be used in the future. "And do not deprive people of their due."