1968-1973 C3 Antenna Mount Ground Plate 3921443 - OEM Number(s) (3921443)
1968–1973 Corvette C3 Antenna Mount Ground Plate | GM# 3921443
Having trouble with weak or inconsistent radio signals in your 1968–1973 Corvette? The issue might not be your antenna—it could be the ground. This Antenna Mount Ground Plate, designed as a direct replacement for GM part number 3921443, is the often-overlooked hero that ensures optimal signal reception by providing the necessary ground path for your antenna system.
Signal Strength Starts with Solid Grounding
Mounted between the antenna base and body panel, this ground plate completes the electrical circuit needed for reliable AM/FM performance. Without it, even the best antenna can fall short. Whether you’re restoring a classic or replacing a missing or corroded original, this part is essential to restoring factory-correct radio function.
Built to OE standards with precision fit and finish, it ensures both function and authenticity—key for restorers and daily drivers alike.
Key Features:
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Direct replacement for GM# 3921443
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Fits 1968–1973 Corvette C3 models
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Provides correct electrical ground for antenna function
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Maintains factory-correct installation and performance
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Helps reduce static and improve reception clarity
Don't let a missing ground ruin your ride's soundtrack—bring back the broadcast with the right foundation.
Also known under these part numbers: (For reference only)
- 163034
- 3921443
- 686420082576
- A-302
- A9896
- EC318