Helllo, i have an 04 cavalier. i recently replaced my exhaust and when i had it put on the shop said i needed new O2 sensors. Does anyone know where i can get cheap ones. even used. because i had no idea that they where that expensive. If anyone is selling them i need the one before AND after the converter. PM me if you know anything. Thanks

Rock Auto O2 Sensors

These guys have cheap parts. The descriptions are a little vague, but there are universal sensors you can use.

how did they determine you needed new ones? did they read the voltage flops or did they simply look at them and say "yep, dems is bad arrockon." in any exent, stay away from universal o2 sensors, and buy delco parts.



JBO Stickers! Get yours today!

If i took a picture of them i would show you lol. the after the cat had to have been hanging down when i had the car towed and it was trashed from grinding on the road. And as for the one before the cat the wires were cut. I would buy AcDeclo but they arent the cheapest either. Whats wrong with the universal kind, i prefer not to buy universal anything but if it saves me 90 bucks i should concider it.

last time I checked NTK (which is NGK) were the best bang for the buck.