Curious how difficult these are to replace. When I replaced the rear O2s, I was looking for the fronts and while I found the actual sensor I didn't find where the wiring plugs in. It seems like the connector isn't easily accessible and I'm wondering if I should let a mechanic do it or maybe if I should approach the sensor plug in from the engine bay vs. under the car?

Any advice?

 

the connector it at the top of the bellhousing its a tight fit for my hands to say the least. a clod engine is a must

 

Did you access under the car or through engine bay?

 

depends on if my hand/arm will fit or not, i dont remember off hand, its been a while since i changed mine. all you can do is roll up your sleeves and try it, you will see which way works the best. most are easier from the bottom