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Mr. Gasket Header Bolts - 5/16-18 x 3/4 Inch Allen Head - Black Oxide

Fits Small Block Chrysler 318/340/360


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When installing headers you will need header bolts, factory exhaust manifold bolts won't work. These Mr. Gasket Header Bolts are grade 5 for strength and black oxide coated. If you've ever had a set of headers where a socket just seemed it wouldn't fit these might be your answer. These bolts have a socket head or Allen key drive in the center and that compact socket design is ideal for just that problem. Sold as a set of 12.


  • Compact socket head - ideal for tight spaces
  • Black oxide coated
  • Grade 8
  • 5/16"-18 x 3/4" Long
  • Set of 12 pieces


BrandMr. Gasket
Emission Code5
FinishBlack Oxide
Product TypeHeader Bolts
WarrantyLimited 90 Day
Part Number3411MRG



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Warranty Information

Limited 90 Day: See Details
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