Honda GX 35 Small Engine Carburetor Replacement Kit
It seems like there are similar kits for lots of small engines; maybe some of the info in this video might help you with yours.
Here is the wording of the eBay listing :
Carburetor Air Filter Cover Kit for Honda GX35 HHT35 HHT35S 16100-Z0Z-034
Mine actually came with two new air filters,but, the listing one says 1 (?)