It just the 110000, 120000, and 150000 OHV series that used this setup.
The other Briggs OHVs uses just valve cover that can have either a gasket or RTV with Briggs recommending using RTV even on the ones that came with a gasket. The above are the exception to the RTV recommendation.
Personally I dealt with those that are RTVed by Briggs and they are a pain to get off without damage to the cover.
As you said the Chinese clones are taking over the market. Even Briggs OHV are now Chinese made engines. I recently ordered a replacement Walbro carburetor for the Briggs OHV Horizontal and got one those of Ruixing carburetor instead.
A lot of the Chinese junk we can't even get parts for when they breakdown; we either install a new engine or just send the equipment to be recycled. It is plain don't make sense to me as tech that I got tell customers their equipment is unrepairable due to the lack of parts especially on something that is only a year or two old.
