The Air Lift 57231 Loadlifter 5000 Helper Spring Kit is the perfect way to level your Ram 3500 and improve your ride quality. With up to 5,000lbs of load leveling capacity, these helper springs will keep your truck level and provide a comfortable ride, even when carrying a heavy load. The air line is made from nylon for durability, and the quick connect air fittings make installation a breeze. All mounting hardware and instructions are included.