supply plenum for 89 Bounder defrost
I was told the part is called a supply plenum. It is the large cuplike part that goes from the heat and air hose to the bottom of the dash that the air blows out of onto the windshield. Ours is crumbled from age and whatever. Need replacement on both sides under dash. Could anyone tell me where I can find them? And if this is what they are called? Thanks in advance, Juanita
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