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Mr. Gasket

Mr. Gasket Header Bolt Lock Washers - 3/8 Inch

Fits 3/8 Inch Header Bolts

Part # 3416 Be the first to write a review
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These washers will help to prevent loosening caused by vibration, and they also help maintain fastener clamp load for positive flange seal.


  • These Washers Have A Black Oxide Coating
  • (12) Pieces 3/8" Washers

About Mr. Gasket

Using his own '57 Chevy as a rolling testbed, drag racer Joe Hrudka launched the most famous gasket company in the world more than half a century ago. Mr. Gasket is the go-to gasket source for racers with gaskets and fasteners that seal perfectly every time.

Brand Mr. Gasket
Emission Code5
FinishBlack Oxide
Product TypeHeader Bolts
WarrantyLimited 1 Year Warranty
Part Number3416

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.

Limited 1 Year Warranty: See Details

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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.