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1964-1972 Corvette C2-C3 Radiator Expansion Tank Inner Fender Bracket - 3843431

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Item ID: 656-439
GM Part #: 3843431
Availability: Out of Stock
Fits Years:
  • 1964-1967
  • 1968-1972
$29.99
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  • Description

1964-1972 C2-C3 Radiator Expansion Tank Inner Fender Bracket - 3843431 - OEM Number(s) (3843431)

Restore OEM Stability for Your Surge Tank System

Ensure your Corvette’s radiator expansion tank is mounted securely with this 1964–1972 Corvette Inner Fender Bracket. This reproduction bracket is an exact match to the original GM #3843431 and rivets directly to the fiberglass inner fender skirt, providing a stable base for your surge tank. It’s a vital detail for maintaining correct underhood appearance and coolant system function—especially for cars factory-equipped with aluminum radiators.

Fitment Notes
Fits 1964–1967 with 327 engines
Fits 1965 with 396 engine
Fits 1968–1972 with 327 or 350 engines without A/C

Features
Correct 16-Gauge Steel Construction
Black EDP-Coated Finish Prevents Corrosion
Matches GM #3843431 Dimensions and Hole Locations
Installs with Rivets (not included)
Supports Original Expansion (Surge) Tank Mounting

Dimensions and Weight
4 1/4" Tall x 3 1/8" Wide
Offset Arm Depth: 1 3/8"
Weight: 6.5 oz

Because Details Matter
Factory-style cooling systems used this bracket to support the expansion tank on small block and select big block Corvettes with aluminum radiators. Without it, your surge tank is left unsupported—leading to stress, leaks, and poor engine bay presentation. Whether you're restoring to NCRS specs or simply solving a missing bracket problem, this reproduction delivers strength and authenticity.

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

  • 242130
  • 3843431
  • 686420085706
  • A8015
  • E10358
  • M-235A
Prop 65