Do I need fasteners to install this, or does it come with bolts?

Assembly only—fasteners not included. You'll need the OEM hardware kit or equivalent metric bolts that match your factory mounting holes. Check your service manual for the correct spec.

Is this the complete mirror or just the glass?

This is the full mirror assembly with the manual adjustment mechanism built in. It's ready to bolt straight to your door.

Will this fit if my original mirror is electric?

No—this is manual adjustment only. If your Versa came with an electric mirror, you'll need to confirm compatibility before ordering. Check your door panel connector and mounting tabs first.