Cometic C5816-052 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.320

The Cometic C5816-052 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Chevrolet Mark IV Big Block V8 engines. Engineered with a 4.320-inch bore diameter and .052-inch compressed thickness, this gasket provides exceptional sealing capability for both stock and high-performance applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior durability and reliability
• 4.320-inch bore diameter for proper fitment on Mark IV Big Block engines
• .052-inch (1.32mm) compressed thickness for precise compression ratio tuning
• Advanced embossment design ensures optimal sealing around combustion chambers
• Viton rubber coating provides resistance to oil, coolant, and combustion gases
• Handles extreme cylinder pressures in high-boost and high-compression applications
• Eliminates the need for re-torque procedures after initial installation

Cometic MLS gaskets feature multiple layers of stainless steel with a proprietary coating system that creates a micro-seal at the surface level. This design accommodates minor surface imperfections while maintaining excellent combustion sealing, making them ideal for performance builds, forced induction setups, and demanding racing applications. Compatible with aluminum and iron cylinder heads when paired with proper surface preparation.