The Firestone 2158 Air-Rite Standard Duty Single Air Control System provides an instant air source for the air suspension products on your truck. Featuring a single gauge control, this kit will allow for equal pressure in your air bag helper springs with the flip of a switch. Ideal for light towing applications.Features:  Single Gauge Control Standard-Duty Compressor 1-Year Warranty Kit includes: Single gauge, compressor, air line, fittings, filter and fasteners.