Mr. Gasket Headlock Locking Header Bolts

3/8"-16 x 3/4"L. Qty. 12 Fits AMC 290-401. Chevy Small Block 262-400, Chrysler Big Block 383-440 Wedge Engines, Pontiac 326-455, and Oldsmobile 330-455.

PART# 2230G

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$33.38   Your Price
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Headlock™ Bolts eliminate the need for lock washers, Period. That's because each Headlock™ Bolt features 24 equally-spaced, stainless steel teeth serrations that bite into and hold onto the attaching surface–eliminating the need for lock-washers.


  • 12 per Package
  • Includes a ball-head/hex-key socket-installation tool that makes it easy to get them started
  • 410 stainless steel
  • Minimum 180,000 PSI tensile strength
  • 24 equally spaced clockwise teeth


BrandMr. Gasket
Emission Code5
Material410 stainless steel
Product TypeHeadLock Locking Header Bolts
Part Number2230G


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.

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        *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

        Some parts are not legal for use in California or other states with similar regulations.