Will this fit my existing mirror housing?

Yes—this is a direct replacement lens for the factory left mirror assembly. It seats into the same bracket and mounting points with no modification.

Do I need adhesive or fasteners to install this?

Mounting hardware is not included. Your factory mirror housing will determine the installation method—most use clips or adhesive already in place. Test-fit before committing to any fastening method.

Can I clean and polish this before installing?

Yes. Wipe down the glass and any mounting surfaces with a clean cloth before fitting it to the housing. Avoid harsh abrasives that could damage the surface.