Will this swap into my mirror housing without removing the entire assembly?

Most drivers can pop out the old glass and press the new one in from the back of the housing. You typically don't need to unbolt the mirror from the door—just pull back the trim panel or gasket and the lens usually comes free. Test-fit before you commit to anything permanent.

Do I need any adhesive or fasteners to install this?

The glass typically seats with tension into the housing frame itself. Some housings use a backing plate or rubber gasket that holds everything in place. Check your existing setup before ordering adhesive—most installs don't need it if the lens is the correct size.

Can I return this if it doesn't fit my specific mirror housing?

Mirror housings can vary even within the same year range depending on trim level or regional differences. Inspect your old lens and compare dimensions before installing. If you're unsure about fitment, measure your existing glass or reach out with photos of your mirror assembly.