do i have the right o2 sensor??
 

ordered a new o2 for the 91 pickup and this is what i got in the mail

http://i134.photobucket.com/albums/q...-18-41_396.jpg

and when i got under the truck yesterday it looked like this

https://www.yotatech.com/attachments...ud-size-ss.jpg

does the o2 unscrew from the flange or did i get sent the wrong one?

i noticed on this one that the flange is separate .. does anyone sell the flange separately?

https://i.ebayimg.com/t/APW-Internat...4DQQ~~60_1.JPG

also.. the one thats on the truck now is on there pretty good.. any tips on getting this thing off?

Where did you get the one without the flange? I only buy oem and they come with the flange on them like the one on your truck now. I started soaking the nuts with pb blaster several days before I changed mine and they came right off. We dont have much rusting problems here

got it off of ebay.. trying to sell the truck so i just need it to pass smog.. thus why i didnt go w/ an oem one .. got the original 02 off.. used wd40 and let the truck run for a few minutes to warm up the exhaust, now to see if it unscrews from the flange .. the pic i posted above w/ the flange was one i had just found online.. not my actual o2.. mine looks like it might unscrew..

well, its not budging.. guessing its one of the 1 piece units.. bah!! i found a flange, its $7, but the shipping is $12 which i find absurd

ok, well this is the flange i found
http://www.mandrelbendingsolutions.c...-Flange/Detail

buuuut, yes there is a but.. i found the same one by the same seller on eBay for about $13 cheaper .. just posting this up here if anyone else comes across the same problem
http://www.ebay.com/itm/180189633520...84.m1497.l2649

i went ahead and ordered it