Review on NGK Oxygen Sensor 23023 by Ryan Hart

There is no better oxygen sensor for your Jeep. I had a Bosch sensor in my jeep and noticed a reduction in fuel consumption. I noticed that pretty quickly. I had another sensor for about a year and noticed it wasn't running as smoothly and was a bit low. I put this NGK (NTK) sensor in which is the same as the OEM - and almost immediately it runs smoother, now it runs at normal RPM and the exhaust pipe doesn't smell as greasy (I think the rest of the richness can be felt I come from the cat converter). I will never use anything else again.