Do I need to remove the entire mirror housing to swap this glass?

No. The glass lens pulls or unclips from the existing mirror housing—no housing removal necessary. Mounting method varies by model year, so verify your specific attachment before starting.

Will this glass work if my current mirror is damaged or cracked?

Yes, as long as the mirror housing itself is intact and not bent. This is a direct glass-only replacement, so the housing structure needs to be sound.

Is there any prep or adhesive needed before installation?

Clean the mirror housing mounting surface with rubbing alcohol and let it dry completely before seating the new glass. Follow OEM clips or fasteners—do not use adhesive unless your housing requires it.