5 gallons of 200 PSI air in one premium, powerful, yet affordable package. Do you have a horn you want to bring to its full potential? Nothing is louder than a 200 PSI air system, and, better yet, with 5 gallons of air you'll be able to honk to your heart's delight. This air system can recharge itself from 165 to 200 PSI in just 2 minutes and 20 seconds. Having onboard air has never been so easy. HornAir packages come with everything you need to install a fully functional air system on your vehicle.