Crown Automotive 5149180AA Oxygen Sensor For 01-12 Jeep Vehicles

I'm sure this a quality part but check your plug first before buying. The photo doesn't give a front view of the plug but you can sort of see that the bottom locating rail is offset to the right. I purchased this sensor for the first O2 sensor on the front diff side of the engine for my JK with the 3.8L and the plug has the bottom locating rail in the middle not offset like this one. Also, you should buy O2 sensors in pairs and change both at the same time. That is if you are replacing one of the pre-catalytic sensors, change the other pre-catalytic sensor on the other side of the engine not the post-catalytic sensor on the same exhaust pipe.