Does this glass install without removing the entire mirror housing?

Yes. The glass slides into the factory housing from the back — no need to unbolts the mirror from the door. Access the housing, remove the retaining clips or adhesive, and swap the glass out.

Will I need adhesive or is it clipped in?

Mounting method is designed for factory fitment, but the exact retention style (clip, adhesive, or both) depends on your vehicle's assembly. Test-fit before committing to any fastening method — some models use both.

Can I order just the driver side, or do I have to buy a pair?

Order individually. Specify driver or passenger side in your order notes, and you'll receive one glass panel. Buy as many or as few as you need.