THE GMHD-OBA includes a 100% bolt-on onboard air system with direct fit vehicle specific mounting brackets. No cutting, welding or drilling is required. Kit includes a model 6450RC 150 PSI waterproof high output air compressor, powder coated steel 3-gallon air tank and remote mount quick connect tire inflator with storage bag. Kit includes a 160 PSI panel mounted gauge and locking air chuck with digital pressure gauge and pressure release. System comes complete with all necessary air line, wiring and hardware for a professional looking installation.