I have both my OEM o2 sensors in a box of spare parts in my garage. I sold the SECONDARY sensor and need to know which one to ship to the buyer. One of the sensors has a grey shrouding and the other is orange. ANy help in identifying them would be sweet. TIA

 

You might need to ask in the Arizona forum for a local MY04 owner to crawl under their car for you to look. The colors of the wire wrap changed over the years. My MY01 has neither orange or grey.

 

I have an 04 ap2. I just jacked up the car to check, and the primary one is orange (in the header). The secondary (one in the cat) is gray. Hope that helps.

 

You are the man. Thank you very much for your help!