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1963-1974 Corvette C3 Gas Cap Rubber Gasket - Seals to Filler Neck

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Item ID: 670-202
Availability: In Stock - Ships today if ordered by 3 PM CT
Only 2 Left, Order Soon!
Fits Years:
  • 1963-1967
  • 1968-1974
$5.99
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  • Description

1963-1974 C3 Gas Cap Rubber Gasket - Seals to Filler Neck

Restore proper vapor containment and factory function with this rubber gas cap gasket for 1963–1974 Corvettes. Over time, original gaskets degrade—leading to poor sealing, fuel vapor loss, or rattling caps. This fresh replacement restores correct seal performance between your fuel cap and filler neck.

Features
• Rubber replacement gasket for fuel cap sealing
• Correctly fits between gas cap and filler neck
• Measures 3.3" outer diameter, 2-3/4" inner diameter
• Gasket width is 1/4", 1/16" thick nitrile rubber
• Seals vapors and cushions cap for proper seating

Dimensions and Weight
• Outer Diameter: 3.3"
• Inner Diameter: 2-3/4"
• Thickness: 1/16"
• Width: 1/4" sealing surface

Because Details Matter
Fuel vapors shouldn’t leak—and neither should your restoration credibility. A fresh gas cap gasket helps eliminate odor, improve seal, and keep your fuel system tight. This simple part plays a key role in appearance and performance.



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

  • 1705
  • 3028200
  • 686420091271
  • ZGT-251
  • ZGT251
Prop 65