Will this work with my existing mirror housing?

Yes — this glass mounts directly to your factory mirror base using the existing attachment points. No modification needed to the housing itself.

Do I need to remove the entire mirror assembly from the door?

Most installs don't require it. You can access the glass from behind the housing once you remove the trim. Full removal is optional depending on your comfort level and how tight the fit feels.

What if the glass doesn't seat properly the first time?

Test the fit before fully securing it. Factory mounting points should align, but slight angle adjustments during installation are normal. If gaps persist after a clean install, contact support with photos for next steps.