The original Mustang Heater Plenums were made from a pressed board that deteriorated and warp when exposed to liquid. They are also often torn.
Our replacement heater plenums are molded from virgin ABS plastic for good looks and durability. Cable clamp and screw are attached, and inner door has closed cell foam bumpers installed. These plenums are manufactured by Scott Drake Mustang Parts and are the finest ones on the market.
This Heater Plenum fits all 65-66 Mustangs (Air and no Air) and the 67-68 Mustangs that were not originally equipped with factory Air Conditioning.