Honda produces small engines at 5 production facilities worldwide. Our production capacity is well over 7 million units. Engines for the U.S. market are primarily sourced from the U.S., Japan, and Thailand.
I would check/confirm that from the company web site but I'm not sure I still have access. I know for a fact the two I ordered though the company were made in the USA. Something that you will not find that I was able to pull off is consecutive numbers. These were planed for a twin engine cart. That will be cool if'n I ever get to do it.