Cometic C9791-051-020 Millennium 3-9/16" Bore Head & Base Gasket Kit

The Cometic C9791-051-020 Millennium Head and Base Gasket Kit provides a complete top-end sealing solution for V-twin engines with a 3-9/16 inch bore. This kit features Multi-Layer Steel (MLS) construction for superior sealing performance in demanding applications.

Key Features:

• 3-9/16 inch (3.5625") bore diameter for precise fitment
• .051 inch thick MLS head gasket for optimal compression sealing
• .020 inch thick base gasket for proper deck height
• Multi-layer stainless steel construction with Viton rubber coating
• Heat resistant up to 482°F (250°C) for high-temperature applications
• Embossed outer layers conform to surface imperfections
• Reduces bore distortion through even torque distribution
• Install dry - pre-coated with .001" Viton sealant

Cometic's Millennium series gaskets feature three to five layers of stainless steel with embossed, Viton-coated outer layers bonded to an uncoated stainless steel center shim. This advanced design provides exceptional rebound characteristics, corrosion resistance, and the ability to maintain seal integrity under extreme cylinder pressures. Manufactured in the USA with American-sourced materials for superior quality and consistency.