Cometic Top End Gasket Kit for Honda, 66 mm (C3187-EST)

The Cometic C3187-EST Top End Gasket Kit provides the essential sealing components needed for a reliable top-end rebuild on compatible Honda 4-stroke engines. This kit includes the correct base gasket, head gasket, cylinder O-rings, and additional top-end-specific O-rings or seals required for removal and installation. Designed for high-output naturally aspirated and boosted applications, it helps restore dependable sealing performance during engine service.
The multi-layer steel head gasket uses embossed outer layers with a proprietary Viton rubber coating to promote consistent sealing across the gasket surface. Its construction helps distribute torque evenly, reduce bore distortion, and support improved piston ring sealing for dependable engine performance. The head gasket material also draws heat away from the combustion ring and disperses it across the gasket surface, helping eliminate hot spots and reduce the risk of gasket failure under demanding operating conditions.
Cometic’s EST, or Extreme Sealing Technology, combines embossed stainless steel head, base, and rocker gaskets with a specialized rubber coating. This design is engineered to meet the high cylinder pressures and thermal demands found in today’s performance-focused 4-stroke engines. Manufactured in the USA, the Cometic C3187-EST gasket kit is a practical choice for professional rebuilds, performance upgrades, and routine top-end maintenance where accurate fit and durable sealing are essential.

Features:

• Complete Top-End Kit: Includes the base gasket, head gasket, cylinder O-rings, and other required top-end O-rings or seals.

• Multi-Layer Steel Construction: Promotes even torque distribution across the gasket sealing surface while helping reduce bore distortion.

• Viton Rubber Coating: Embossed outer layers provide reliable sealing for demanding high-output engine applications.

• Extreme Sealing Technology: Includes embossed stainless steel head, base, and rocker gaskets with proprietary rubber material.

• Heat Management: Spreads heat away from the combustion ring to help eliminate hot spots and reduce gasket failure.

• Performance Application: Designed for compatible Honda 4-stroke naturally aspirated and boosted engines.

• Made in the USA: Manufactured by Cometic for consistent quality and dependable service.

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