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Mr. Gasket

Mr. Gasket Rocker Arm Nuts with Locks

Fits Small Block Chevrolet 283-400, Pontiac 326/400/455, Ford 289/302/351W with aluminum Rocker Arms

Part # 923G Be the first to write a review
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Designed to keep the rocker arms positively locked for precise and critical valve train adjustments. Manufactured from quality grade steel, then heat-treated for extra strength and plated with a durable finish. Kits include 16 rocker arm nuts with socket head set screws and one hex key wrench.


  • (16) Rocker Arm Nuts w/ Locks 3/8"-24 Threads
  • Shank O.D. .540"
  • Includes Locks and Hex Wrench

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
EngineChevrolet Small Block Gen I
Ford Small Block Windsor
Pontiac V8
Product TypeEngine Fasteners
Quantity Per Pkg.16
WarrantyLimited 90 Day
Part Number923G

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 90 Day: See Details

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