Everything needed for the installation.
Blower, tune (possibly requires computer to be sent in, but shipping is included if needed),heat exchanger, pump, wiring, belts, hoses, clamps, zip ties, literally everything!
there's always more than one door. its just that most times, the other ones are obscurred from view. and if they prove to hard to get thru, kick the ****ing wall down. so they have your car now? or are you doing the install yourself?