Will this filter fit my air box without modification?

Yes. This is a direct replacement for the factory filter — it seats into the stock air box the same way the original does. No cutting, adapters, or custom work needed.

Do I need to clean or prep the air box before installing this?

Good idea to wipe out any dust or debris inside the air box while you have it open. A clean box keeps the new filter working at full capacity longer.

How often should I replace this filter?

Depends on your driving conditions. Dusty or off-road use calls for more frequent changes; highway driving gets longer intervals. Check it every 12 months and replace when visibly clogged or restricted.