Does this filter come with new mounting clips or fasteners?

The filter unit ships as shown — mounting hardware not confirmed in specs. Check your factory air box setup before installation to confirm what fasteners you'll need.

Do I need to clean or prep the filter before it goes in?

New filters ship ready to install. Just verify the intake housing is clean and free of debris before sliding the filter into place.

What's the difference between this red filter and a standard white or black one?

This is a red-finished filter — the color is cosmetic. Filtration performance and airflow characteristics depend on the filter media itself, which isn't detailed in the specs. If you need performance comparisons, reach out before ordering.