Looking to add onboard air on your truck but don't know what parts to go with? PacBrake has the solution for you! This is a complete air system with everything you need to have onboard air. Comes with the HP325 Series compressor, two and a half gallon air tank(Steel or Aluminum), curly hose and accessory kit, and all wiring and hardware to complete a hassle free installation. This kit is perfect for air horns, air lockers, and great for filling up tires up to 33".