Cometic Multi-Layer Steel (MLS) Head Gasket for GM Gen II/Mark IV Big Block (4.630" Bore)

Ensure maximum sealing integrity for your powerful GM Gen II or Mark IV Big Block engine with this high-performance Cometic Multi-Layer Steel (MLS) Head Gasket. Designed for a 4.630-inch bore and featuring a compressed operating thickness of 0.045 inches, this gasket is engineered to handle the extreme demands of large displacement performance engines like the 396, 402, 427, and 454.

Precision Engineered for Big Blocks:

• Multi-Layer Steel (MLS) Construction: Built with multiple embossed stainless steel layers, offering exceptional strength, resilience, and resistance to high combustion pressures and temperatures.
• Viton Coating: Both outer layers are coated with Viton, a premium heat-resistant elastomer, providing a robust seal against aggressive fluids and extreme heat.
• Optimized Thickness: A compressed operating thickness of 0.045 inches is critical for maintaining precise compression ratios in high-performance applications.
• Broad GM Big Block Fitment: Specifically designed for GM Gen II and Mark IV Big Block engines, including popular displacements like 396, 402, 427, and 454.
• No Sealant Required: Cometic MLS gaskets are engineered for direct installation, eliminating the need for additional sealants and simplifying the assembly process.
• Corrosion Resistance: The stainless steel construction provides superior resistance to corrosion, ensuring long-term reliability and performance.

This Cometic MLS head gasket is the ultimate choice for builders and enthusiasts seeking uncompromising sealing performance and durability for their GM Big Block projects. Trust Cometic Gasket for your critical engine components.

Part Number: CGSC5331-045

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