Cometic C9721-027 MLS Head Gasket Kit 3.875" Bore .027" Twin Cam

The Cometic C9721-027 is a premium Multi-Layer Steel (MLS) head gasket kit designed for Harley-Davidson Twin Cam engines with a 3.875-inch bore diameter. This high-performance gasket features a compressed thickness of .027 inches (0.686mm), making it ideal for engines running stock compression or mild performance builds.

Key Features:

• Multi-Layer Steel construction provides superior sealing and durability under high-temperature, high-pressure conditions
• 3.875-inch bore diameter accommodates stock and slightly oversized pistons
• .027-inch compressed thickness helps maintain proper compression ratios
• Viton rubber bonded to stainless steel for exceptional sealing at cylinder head interfaces
• Exceeds OEM gasket performance for street and performance applications
• Complete kit includes all necessary gaskets for cylinder head installation

Cometic's MLS gaskets are engineered with multiple layers of stainless steel and proprietary coatings that allow the gasket to recover and self-seal minor imperfections in the sealing surface. This design ensures a reliable seal throughout the engine's operating range, from cold start to full operating temperature. The gasket's construction distributes clamping load evenly across the combustion chamber, preventing hot spots and gasket failure common with traditional composite gaskets.

This gasket kit is specifically designed for Harley-Davidson Twin Cam engines and is a direct replacement for OEM applications requiring the .027-inch thickness specification.