Hi there guys does anyone out there know what size the o2 sensors are?

I bought a set of vance&hines pipes and 1 of the o2 sensor sockets are stripped.

Crooky Im having a similar problem .Google V & H and email tech suport they will help you out. 09 flhtcu 18mm the 2010 is 12mm, think they do it to get more $ out of ya. picked up some headers for my 09 opend the box and they are for a 2010 better pipes diferent ports 12mm .just waiting for a reply from V&H to see if the ports can be bored out to 18 mm and to get the thread size. I emailed them earlier this week to see if the pipes would fit and had a reply within 24 hrs.  Got a reply the guys on hols untill the 18th