I'm polishing my stator cover and probably my water pump cover and maybe my head. I've never polished aluminum before but I've researched how to do it after I've achieved the shine I want what do I do to seal it, coat it in high temp clear? Thanks guys

A good coat of carnuba wax 1-2 times a month should keep it shiny.

its aluminum. it will be fine unless you ride where they salt roads.

Yup... Break out your magnet & check

You won't have problems with corrosion, aircraft have survived 60+ years with polished aluminum skin without issue.
Just have to keep at it every now and then to maintain the shine.
Don't clear coat it, you'll wind up making it look dull regardless of what you put on it.