No, these don't have the O2 sensor bungs. The secondary set before the muffler are what these replace and they don't have O2 sensors. If your car is 2000 and up you have two sets of cats, these replace the 2nd set.
I'm sorry boxstar, meant to pm you but, I don't need them. It's a great deal but, I got them from a local PCA member at the same price. Sorry again, that was pretty dick of me not to inform you.
Great deal someone pick these up!
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