[Guest]

what is the name of the heater component that has the 2 vent hoses connecting on top of it, is connected to the heater and is right in the middle of the car floor under the dash! In the book i have it just says part number 18471, is there a book you can buy that will tell you all of the parts with these numbers?

 

[pprince]

Plenum I believe

Paul
1965 Mustang 2+2
1989 Mustang GT Convertible
MCA #27261
MCA certified judge for 65's and late models

 

[ivygreen65]

It is the defroster plenum. It was cardboard originally and probably now a plastic reproduction.