Will these covers fit over my existing door handles without removal?

Yes. These are designed to slip over factory handles and mount at the existing attachment points. No disassembly or removal of OEM hardware is necessary.

Do I need to sand or prime these before installing?

ABS panels come ready to install as-is. If you want to paint or customize them, a light scuff with fine grit sandpaper and primer-compatible prep will help adhesion — but it's optional for unpainted installation.

What's the best way to secure them if they don't come with fasteners?

Confirm mounting method before you commit. Test-fit first to see how they sit on your handles, then decide between adhesive-backed strips, small fasteners through existing holes, or factory clip points depending on your setup.