65-68 Mustang Heater Plenums

Just about every 65-68 Mustang needs a new Heater Plenum.  The original plenums were constructed of a pressed board material that just cannot hold up over a long period of time.  Original heater plenums are usually torn and warped from water/antifreeze damage.  This Plenum directs the air flow to either the defroster hose to the windshield or to the floor.

The Mustang Heater Plenums that we handle are molded from ABS plastic.  They come in a dark gray color to replicate the color of the original cardboard plenum.  They feature the correct bracket, grommets for the flapper door rod, and a metal flapper door with pads.  They are a tremendous improvement over the original cardboard Heater Plenum.  The price is also incredibly reasonable.  Order our part number IN-546.