Denso and NTK are two of my favorite Asian suppliers for parts like these, they're very good. But you're right it doesn't mean the OEM sensor doesn't have some weird exclusive bull **** going on. If the parts store wants $339 for a Bosche unit, I don't want to call a dealer to see what they want for the "Honda" OEM part.... Of course I also don't want to waste $200 on a part that while it may (partially) work (narrow band portion), wont allow the lean burn mode to engage due to some odd non-standard 0-5v wideband calibration
Just looked up the Factory "genuine Honda" part HOLY CRAP! $497
https://www.hondapartsnow.com/genuin...sohc,2816050,8
Just didn't "feel" like going and messing with it earlier, so I guess when I get home tomorrow I'll check the plug connection on the senor and maybe pull the negative cable on the battery for a bit and let the ECU codes clear and see if it comes back before worrying about it to much. I did at least notice the NTK and Denso sensors were cheaper on Amazon than anywhere else.
I did happen to notice this on one of the review of the Denso unit (on amazon) "Denso O2 sensors are the only ones that belong on a Japan car.
Had a Delphi and it did not fix my issue on my HX, this one did!"