Description
A properly sealed rocker box is fundamental to maintaining oil pressure and preventing leakage that compromises engine performance. The COMETIC Upper Rocker Box Rubber Gasket C9278 delivers reliable sealing with a dual-layer Viton construction designed to handle thermal cycling and mechanical stress without degradation. If you’re rebuilding a top-end or performing routine maintenance, this gasket ensures your rocker assembly stays dry and your engine runs clean.
- Viton rubber coating
- Stainless steel core
- .001″ coating thickness
- Made in U.S.A.
- Dual-sided seal
- Chemical resistant
- Thermal stable






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