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



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



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?

 

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