Cometic C9551-1 HD Base Gasket .020" for Harley 1340 Evolution 1984-1999

The Cometic C9551-1 is a heavy-duty base gasket engineered specifically for Harley-Davidson 1340 Evolution engines from 1984 to 1999. This precision-manufactured gasket features a .020" (0.020 inch) thickness and is constructed from Cometic's proprietary RCM (Rubber Coated Metal) material with embossed sealing beads for superior sealing performance.

Key Features:

• RCM (Rubber Coated Metal) construction combines the benefits of rubber gaskets with the durability of metal core technology
• .020" thickness allows for precise deck height and compression ratio adjustments
• Embossed sealing beads provide enhanced conformability to imperfect sealing surfaces
• Designed specifically for Harley-Davidson 1340cc Evolution Big Twin engines (1984-1999)
• Ideal for performance builds, engine rebuilds, and stroker applications requiring custom base gasket thickness
• Manufactured to OEM specifications with improved sealing characteristics

Cometic gaskets are a preferred choice among professional engine builders and performance enthusiasts for their consistent quality and reliable sealing. The RCM material resists oil degradation and maintains sealing integrity through repeated heat cycles, making this gasket suitable for both stock and high-performance applications.