An integrated compressor and pump unit suitable for installation on a vehicle and draw rotary power from a power source of the vehicle. The unit includes a compressor unit and a separate pump unit. The compressor unit has a rotary input shaft coupled to a rotary compressing device of the compressor unit. The pump unit is mounted to the compressor unit and has a rotary input shaft coupled to a rotary pumping device of the pump unit. The pump unit is secured to the compressor unit and rotary motion is transferred from the rotary input shaft of the compressor unit to the rotary input shaft of the pump unit such that the rotary compressing and rotary pumping devices operate in unison and in series.