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68-77 Corvette A/C Heater Box & Duct Exploded Diagram (Plus 79-82 Ducts)

Exploded parts diagrams of 1968-82 AC/heater box, ducts, lower outlet, and deflectors with seals and distributor assembly.

AI caption · Photo 18 of 46

This scanned page contains three exploded parts diagrams for Chevrolet Corvette heating and air conditioning ductwork. The upper-left diagram, labeled "68-77 Lower Outlet," shows the exploded assembly of a lower air outlet with its seal, retainer, deflector, and a second seal. The upper-right diagram, labeled "79-82 Ducts," illustrates duct components including a duct, seals, a clip, deflectors, and a deflector housing with its own deflector and seal. The largest diagram, spanning the bottom of the page and labeled "68-77 Air Condition/Heater Box," shows the complete exploded view of the air conditioning/heater box assembly, calling out the RH duct, two views of the outer AC box, the distributor assembly (with its outlets, deflectors, gaskets, and small hardware), and the inner AC box. No part numbers, torque specs, or written instructions are included—only labeled exploded views. A reader can learn the relative assembly order and placement of the HVAC duct and heater box components for 1968–1977 Corvettes, plus duct components for 1979–1982 models, useful for disassembly, restoration, or identifying missing seals and deflectors.

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Frequently asked questions

What components make up the 68-77 lower outlet assembly?
The exploded view shows a seal, retainer, deflector, and a second seal stacked with the outlet and its mounting screw.
What parts are shown in the 79-82 ducts diagram?
It shows a duct, seals, a clip, deflectors, a deflector housing, and an additional deflector.
What major assemblies are in the 68-77 air condition/heater box diagram?
The diagram labels the RH duct, outer AC box (shown from two sides), distributor assembly, and inner AC box.
Does this document cover a 1977 Corvette's heater box?
Yes—the lower outlet and air condition/heater box diagrams are labeled 68-77, which includes 1977; the ducts diagram covers 79-82.

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