I am wondering if there is a replacement O2 sensor from another car that can be "made" to work in my Audi 4000q. They want $184.00 at the stealership so I am guessing that it is that pricey everywhere. if anyone knows what sensor to use instead that would be great. it looks like mine has been "spliced" in. thanks Q-list! ~Kenny 1986 4kq w/issues