An ABS plastic, 3D printed reproduction replacement vacuum link connector for the inner heater case door. If your heater and defroster ducts are not working properly, this most likely would be the culprit as the original latch tends to break over the years of use. This is an exact replication of the original.
We have an instructional video on YouTube on the replacement process if you have any issues during replacement, https://www.youtube.com/watch?v=z168Sqb-QEY
We also use this piece in our world-class restorations so it has passed the fitment and functionality tests.