#28635, "RE: Where to get cheap O2 Sensor" In response to Reply # 1
they are on backorder from nopi, i ordered mine from there not too long ago and i got a response saying that they were out of them and didnt know when they were going to get anymore in. I could either use the money to buy something else or they could refund it to my credit card.
i ended up getting it from autozone for about 85bucks.