For Use w/ Aluminum Rocker Arms. Fits Small Block Chevy 283-400, Pontiac 326/400/455, Ford Small Block 289/302/351W.

Part #: 923G

Brand: Mr. Gasket


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Designed to keep the rocker arms positively locked for precise and critical valvetrain 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. Fits Chevrolet 283-400 SB, Pontiac V8 & Ford 289-302-351 (ex 351C).

ROCKER NUTS w/ Locks - 3/8"-24

Part #: 923G
  • Length: 0.7"
  • Width: 7.8"
  • Height: 9.7"
  • Emissions Code: 5
  • Prop 65: No