Review on Walker Products 250 25017 5 Wire Wideband by Harry Ashcraft

I got a terrible error code signaling that my O2 sensor (on the driver's side, "in front" of the catalytic converter) in my Audi stopped working ( only over 60,000 km). It was supposed to cost many hundreds of dollars to fix at the dealer, but I was able to do it in my garage in a few hours (and scratch my joints) by simply popping the hood and pulling the old one off (check the Audi forums online for instructions ). , it's not bad, but I didn't get it) how the wiring harness works. Once I figured out how to unplug the cable, it was very easy to physically remove and replace. Do your homework, kids!). Anyway, I've driven the new one several thousand miles and the DTC is long gone and I passed the MOT with flying colours, so I'm very happy. Highly recommended!