Air Helper Spring Kit + Air Compressor Kit For GMC Sierra 3500 2001-2005

For GMC Sierra 3500 No Bed Cab and Chassis 2001-2005. For GMC Sierra 3500 SL SLE SLT WT RWD 4WD 2006-2010. For GMC Sierra 3500 Chassis SL SLE SLT WT RWD 4WD 2007. 3、Includes onboard air compressor, single-gauge dash panel, air lines and hardware.