Abstract: A modular instrument panel assembly for a vehicle wherein the assembly includes a base module having a transverse vertical wall located between the occupant compartment and the forward compartment of the vehicle and a transverse horizontal plenum above the wall and acting with the wall to provide structural support. The assembly further includes an air distribution module having an air distribution plenum providing air outlets for selectively distributing air to the occupant compartment, where the plenum provides additional structural support. The two modules are secured to one another and when installed in a vehicle provide structural support for the vehicle body and further provide a separating barrier between the forward compartment and the occupant compartment.