Review on Hyundai Elantra Premium Quattro Upstream by Fernando Wolford

The mold fits and works, was a replacement. It took forever to get the old one out and the new one in, but that's a problem with the car, not the oxygen sensor. Why I'm upset is that this replacement lasted barely 2 months before it failed and triggered another check engine light. The last thing I want to do is spend another 2-3 hours swapping out the November replacement! I had high hopes that I would never have to touch the O2 sensor in my car again, but this product could have a design/durability flaw. I strongly recommend that you look into other brands if you own an Audi.