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1963-1982 Corvette C2-C3 Differential Carrier Upper Rubber Cushion Bushing 3788637

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Item ID: 602-812
GM reference #: 3788637
Availability: In Stock - Ships today if ordered by 3 PM CT
Fits Years:
  • 1963-1967
  • 1968-1982
$12.99
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  • Description
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1963-1982 C2-C3 Differential Carrier Upper Rubber Cushion Bushing 3788637 - OEM Number(s) (3788637)

Eliminate Drivetrain Noise and Restore Smooth Performance
Replace worn or deteriorated forward differential cushions to reduce clunking, banging, and vibration during acceleration. A small part with a big impact on drivability.

Fitment

  • 1963–1967 C2 Coupe & Convertible

  • 1968–1982 C3 Coupe & Convertible

Material/Finish
Steel-reinforced heavy rubber construction, engineered as a faithful reproduction of the original GM design.

Dimensions

  • 3/8" I.D., 1 3/16" O.D. (upper opening)

  • 5/8" I.D., 7/8" O.D. (lower section)

  • Height: 1 13/16"

  • Overall: 1 5/32" tall, 1 5/32" upper thickness

Features & Benefits

  • Replaces GM Reference Part Number 3788637

  • Direct replacement for original cushion bushings

  • Reduces driveline vibration and frame-transferred noise

  • Correct steel-reinforced rubber for factory authenticity

  • Installs on top of crossmember bracket

  • One required per vehicle, sold individually

Because Details Matter
Your Corvette deserves a quiet, smooth ride without unwanted clunks or vibrations. This cushion restores comfort and confidence while keeping your driveline secure — because details matter.

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

  • 25-122898-1
  • 3788637
  • 582121
  • 686420075608
  • SU43
Prop 65