THEBIGDEALS T234741X Oxygen Sensor 13474 234-4018 Downstream for Buick Cadillac Chevrolet GMC Pontiac Oldsmobile

Oxygen sensors do not always work, even if they are supposed to fit your car. I don't know why, but just after 5 tries, I found a sensor that solved my "service engine" light problem. I don't blame the sensor, I blame my car. That's why my rating is "average".

I installed them and they worked for two days then stopped

Definitely seems to have helped a bad miss in my 99 Silverado. But engine light came back on a couple days after installing bank 1 and 2 downstream. But that could be any number of other fuel related issues. Overall pretty well satisfied with quick delivery and good quality so far

Look right haven't installed them yet but my mechanic says everything looks right in the mechanic is myself just too cold to put them in I'll write a novel review Once I'm