Cometic C5329-056 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

The Cometic C5329-056 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Mark IV Big Block V8 engines with a 4.375-inch bore diameter. This .056-inch thick gasket delivers superior sealing performance and durability in high-performance and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for maximum strength and reliability
• 4.375-inch bore diameter designed for Chevy Big Block Mark IV engines
• .056-inch compressed thickness provides optimal sealing
• Precision-engineered to handle extreme cylinder pressures and temperatures
• Eliminates gasket failure common with composite head gaskets in performance builds
• Compatible with aluminum and iron cylinder heads

Cometic MLS head gaskets feature multiple layers of stainless steel with specialized coatings that allow the gasket to adapt to head and block surface imperfections. The embossed layers provide superior recovery and maintain sealing integrity even under extreme combustion pressures, making this gasket ideal for turbocharged, supercharged, and high-compression naturally aspirated engines. This gasket is designed for use with properly prepared surfaces (minimum 50 RA finish recommended).