When I installed my EGR delete I did not like this O-ring connection, being loose and unsupported just did not seem right so I made a bracket tied back to the block. Here is a picture of what I did. I am guessing this is what everyone is talking about.



Don't remember what the original bracket was bolted to , but there was some support there. Mine has not leaked.

If you all are talking about something different, please correct me.