However, there are some caveats. I have noticed in some other reviews that the parts were different sizes than they originally were and YES they are, but they all fit my original burner perfectly with no issues. The electrode and swirler are larger but they work fantastic and seem to last longer than the original components. The reason I'm giving 4 stars is simple: the protective cap that came with it didn't quite fit, so I decided to keep using my original. Since all other parts work great, I was able to buy a set of 10 replacement parts for much less than buying one at a time direct from Thermal Dynamics. My car is an old PakMaster 25 (110v) and I've been using it like crazy since replacing these parts.