Cometic C5491 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.500

The Cometic C5491 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Mark IV Big Block V8 engines with a 4.500-inch bore diameter. This .040-inch thick gasket features Cometic's proven MLS construction, which utilizes multiple layers of stainless steel with elastomeric coatings to create superior sealing under extreme cylinder pressures and temperatures.

Key Features:

• Multi-Layer Steel (MLS) construction for maximum durability and reliability
• 4.500-inch bore diameter designed for big bore applications
• .040-inch compressed thickness for precise compression ratio tuning
• Brodix-specific water passage configuration for proper coolant flow
• Stainless steel construction resists corrosion and withstands high temperatures
• Elastomeric coating provides excellent micro-sealing properties
• Ideal for high-performance, racing, and forced induction applications

Cometic MLS head gaskets are the preferred choice for engine builders seeking reliability in high-horsepower applications. The multi-layer design allows the gasket to adapt to minor surface imperfections while maintaining a secure seal, even under extreme combustion pressures. This gasket is specifically configured for Brodix cylinder heads, ensuring proper alignment of water passages for optimal cooling system performance.