Cometic C15414-043 Chevrolet Mark IV Big Block V8 Cylinder Head Gasket 4.530" Bore

The Cometic C15414-043 is a premium copper cylinder head gasket engineered specifically for Chevrolet Mark IV Big Block V8 engines. This high-performance gasket features a .043" (43 thousandths) compressed thickness and is designed for a 4.530" bore diameter, making it ideal for performance and racing applications.

Key Features:

• Constructed from solid copper for superior thermal conductivity and heat dissipation
• 4.530" bore diameter accommodates standard and slightly over-bored Mark IV engines
• .043" compressed thickness provides precise combustion chamber sealing
• Copper construction allows the gasket to conform to minor surface imperfections
• Designed for high-compression and forced induction applications
• Reusable design when properly maintained and installed

Cometic's copper head gaskets are a popular choice for serious engine builders who demand maximum sealing reliability under extreme cylinder pressures. The soft copper material creates an excellent seal against both the block and cylinder head surfaces, while its thermal properties help manage heat in high-performance environments. Compatible with Chevrolet Mark IV Big Block engines including 396, 402, 427, and 454 cubic inch variants.