O2 sensor part number

Bank 1 sensor 2, 2001, 4.7 V8, 4WD, AC cab, Denso part number?

 

www.densoautoparts.com is your source. Bookmark it, great, easy to use part finder.

Upstream is universal. 4WD downstream are different than 2WD. Here are the 'Direct Fit' (i.e. non-universal) part numbers. I recommend replacing in pairs, but ... you do you. Note, I believe the downstream use a basic gasket, and I don't know if the Denso part will come with it.

 

Thanks, much appreciated.

 

Soooooo, the Denso sensor arrived Saturday and this morning I gathered all the tools I thought I might need, laid my cardboard under the truck, flopped on the ground, crawled under the truck, turned on the shoplight and behold,,,,,,,,,,,,,,, a friggin mess!!! Wouldn't ya just love to beat on some nimrods with a 2x4!?

 

Obviously the person who did that didn't have any nuts. Double entendre intentional.

 

Looks like what I need done to both of my downstream O2 sensors. But that is an awful weld job. Pretty sure I could do a better job and I don't know how to weld.

 

The bugger has a hex nut so I'm assuming (I know, I know) that it unscrews. IF it does unscrew, any educated guess as to what might fit? The upstream sensor?