I am just finishing up a turbo replacement on my 2009 JCW and while trying to get the clamp at the bottom of the catalyst back on, I screwed up the thin copper gasket or seal ring that goes between the catalyst and the flex section of the exhaust pipe. This cone shaped ring appears to have been held in place on the cat with small "tabs".
My problem is that this does not show up in the parts book. Does anyone know where I can get one?
Thanks,

 

Try local muffler shops and if no luck it may sound funny but a plumbing supply house..

 

If it is the one I think you are describing, I bought one from Detroit Tuned. You do have to get the entire clamp to get the little tabbed piece of metal., but it is pretty cheap.