Will this lens fit my current mirror housing without any modification?

Yes. This is designed to mount at factory points—no drilling, cutting, or trimming required. Just remove the old lens and install the new one using the existing fasteners.

Does the heating element work immediately after installation?

Once the lens is secured and your mirror heating system is activated, the element will function. If heating doesn't work right away, check that all electrical connections in your mirror assembly are tight and undamaged.

Can I return this if it doesn't fit once I open it?

Test-fit before committing to installation. Since this is a direct replacement part engineered for factory fitment, verify alignment and connection points match your mirror housing before final mounting.