Briggs And Stratton provide a service repair kit that includes oil, air filter and spark plug.
This is suitable for Briggs And Stratton Classic and Sprint engines
Briggs & Stratton 992230 450/550-Series Classic Sprint Engine Care Kit
Please note all parts listed are personally picked and I have gone to the trouble of only selecting genuine parts where possible.
Leave me a comment on my Youtube channel if you can’t find a part. Just post your question in the comments section of any video and I will get back to you.
You can find my channel here https://www.youtube.com/c/MowerMan