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1956-1980 Corvette Exhaust Manifold Pipe Flange Nuts

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Part #: 645-810
GM Part #: 3829086
Availability: Out of Stock
Fits Years:
  • 1956-1962
  • 1963-1967
  • 1968-1980
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1956-1980 Exhaust Manifold Pipe Flange Nuts

Exhaust leaks can cause numerous headaches and poor performance - keep things tight with this set of 1956-1980 Corvette Exhaust Manifold Pipe Flange Nuts! These direct replacement nuts attach to the exhaust manifold studs that run through the base plate of the manifold, heat riser valve, and pipe flange. This set of 6 OE style 3/8-16 top lock style nuts is enough to do both manifolds (3 per side).

Made in the USA!

  • Fits 1956-1962 C1 Corvettes
  • Fits 1963-1967 C2 Corvettes
  • Fits 1968-1980 C3 Corvettes
  • Set of 6
  • Car Set (3 Per Side)
  • Direct Replacements
  • 3/8-16 Nuts
  • Correct Top Lock Style Nuts
  • Secures Flange Pipe to Manifold
  • Attaches to Manifold Studs


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

  • 3829086
  • EX-570