I have a Bosch oxygen sensor (Bosch part number 13231) for sale for $60. I assumed it would fix my check-engine-light, but after having it looked at, it turns out I didnt need it, so I removed it and am now selling it. I wont get all my money back because it costed well over $100, but hopefully some. It is very lightly used because it was removed very quickly after installing it. Call Dave at 416-528-6499. Click below for photo that I just took.