After noticing my 2001 xj getting slightly louder, I noticed that the front 3-bolt flange on my rear catalytic converter (I have 3 cats, 2 at the front and one before the muffler) has cracked and broken at one of the bolts. The rest of the cat is solid. Does anyone know where I can get a replacement flange to weld to the cat? It's a 3-bot flange but the bolts are not evenly spaced, so I suspect it's unique to the XJ. The truck runs great, so I'd rather fix the cat I have than buy a new one when all I need is the flange.

Thanks for any advice!

 

That's not how it works. You don't buy parts for a cat. They aren't a 'parts' kind of thing. You replace the cat.

Or you have a shop weld your flange.