Does anybody know of a good o2 dummy sensor for a 99 cherokee? When someone did the exhaust on my jeep they failed to leave a bung for the o2.... or even the wiring harness......

 

Witch o2 sensor are you talking about ? sensor 1 or sensor 2 the one after the cat ?

 

the second one by the cat.

 

I would just weld in the fitting for the 02 sensor that way its right .

 

Im guessing whoever did the exhaust did not include a cat? You can use an o2 spacer but as mentioned above you will need to install the wires back to the downstream o2 sensor. If visual inspection is needed a dummy shell can be tacked on.

 

they also make clamp on o2 bungs, no welding needed