P/N 20001 VIAIR’s Ultra Duty Onboard Air System is a pre-packaged compressed air solution that provides an industry-leading, 200 PSI rated, 100% duty cycle 480C compressor, 2.5 gallon air tank, and all components needed to install a working system capable of inflating tires of virtually any size. Onboard Air Systems (OBA) are complete pneumatic systems intended to accomplish various tasks, depending on the kit selected. VIAIR offers OBA systems for smaller compressed air requirements that have a shorter duty cycle need, as well as other systems that provide up to 100% duty cycle and increased air volume by providing a larger tank for compressed air storage. Each Onboard Air System comes complete with compressor(s), air tank, fittings, pressure switch, relay(s), electrical connectors and all applicable accessories.