1972-1977 Corvette C3 Dash Fresh Air Vent Outlet Knob 3996896

1972-1977 C3 Dash Fresh Air Vent Outlet Knob 3996896 - OEM Number(s) (3996896)

Restore correct dash vent function with authentic replacement knobs.

Bring back factory operation to your Corvette’s dash vents with these reproduction 1972–1977 Corvette C3 Dash Fresh Air Vent Outlet Knobs (GM reference 3996896). Worn, missing, or stripped knobs make it difficult to control air flow properly. These black plastic replacements are designed to self-thread onto the shut-off valve rod, restoring smooth vent operation and a correct interior look.

Fits the Following Corvette Models:

• C3 Corvettes: 1972–1977

Material/Finish

• Durable black plastic construction

• Factory-correct finish for 1972–1977 models

Dimensions

• Designed to factory-spec dimensions for OE fitment

Features/Benefits

• Direct replacement for GM reference part number 3996896

• Screws directly onto air vent deflector closure shaft

• Restores missing or stripped dash vent outlet knobs

• Self-threading design for easy installation

• Sold individually for left and right outlets

• Note: 1969–1971 vent knobs were chromed plastic; either style will fit factory outlets

• Sold individually, 2 required per Corvette

Because Details Matter
A missing or stripped vent knob might seem minor, but it disrupts both the function and appearance of your interior. Restoring these small details ensures your Corvette’s dash operates and looks exactly as Chevrolet intended—because details matter.

Also known under these part numbers: (For reference only)

• 25-375595-1
• 250318
• 253122
• 3996896
• 686420078906