Update: Side bristles fall apart after less than a month of use. I replaced all side brushes in less than 3 months. The originals were in good condition after a year of use. This makes me doubt the quality of the rest of the kit. Everything fitted perfectly like they were OEM. The filters appear to be of the same quality as the factory originals. I'll update if I run into any issues in the future, but for now I'm glad I bought them!