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, 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".