Stainless Steel Mounting Bungs and Plugs Adapter M18 x 1.5 Thread Notched Style Weld in Bung with Gaskets (2 Sets)

I saw other reporting this. It seemed like the material these are made of melts at a lower temp than the stainless exhaust does. Thus it’s easy to get undercut welds. It’s thick enough that as long as you’re careful, it can be done. I would have rather had a more standard stainless alloy.

just what I needed fast shipping just what was advertised

No problems with thread after welding on. Very happy with product

Good quality, welded easy.

These are nice