I previously paid $322 to replace the upstream oxygen sensor on my 2006 Kia Optima LX. It had to be replaced due to a malfunction. I watched a youtube video and figured I could do it myself with the right socket. I ordered this socket and received a Bosch sensor from O'Reilly. Replacing and resetting the check engine light only took 15 minutes. The whole thing cost me β¬78. fix my car. This outlet has paid for itself many times over! Excellent purchase.