I just spent the better part of a day changing the front o2 sensors in my '02 Tundra, and it was not what I would call fun!
I wanted to say that I appreciate the info I found in other discussions, about the task:ts: . I went with OEM parts (pre wired) and that saved me a lot of time! That left me time to get the ***** things out!!! They don't make them easy to get to! Once the tires were off, the dirt guards pulled, the brake line moved, and dip stick out of the way it was only slightly difficult! Good luck if you are considering such a repair...