Do I need any tools to install this?

No. This filter slides into your factory air intake box—just pop the cover, swap the old one out, and clip it back. Literally takes two minutes with your hands.

How often should I replace it?

Every 15,000–30,000 miles depending on how dusty your driving environment is. Check it visually—if it's clogged with dirt, it's time.

Will this affect my fuel economy?

A clean filter actually helps. A clogged filter restricts airflow and forces your engine to work harder. Fresh filter = normal efficiency restored.