Cometic C5636-086 MLS Cylinder Head Gasket for GM/Mercury Marine Gen-IV/V/VI Big Block V8

The Cometic C5636-086 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered for GM and Mercury Marine Big Block V8 Gen-IV, Gen-V, and Gen-VI engines. This precision-manufactured gasket features Cometic's proven MLS technology that provides superior sealing under extreme pressures and temperatures.

Key Specifications:

• Gasket thickness: .086 inches (2.18mm) compressed
• Bore size: 4.580 inches
• Multi-Layer Steel (MLS) construction for maximum durability
• Designed for engines with 4 bolts in lifter valley configuration
• Compatible with GM and Mercury Marine Gen-IV, Gen-V, and Gen-VI Big Block V8 engines

Advanced MLS Technology:

Cometic's MLS gaskets consist of multiple layers of stainless steel with elastomeric coatings that work together to create an exceptional seal. The multiple layers allow the gasket to conform to minor surface imperfections while maintaining proper compression under extreme cylinder pressures. This design provides superior resistance to blowouts and coolant leaks compared to traditional composite gaskets.

Performance Benefits:

• Excellent sealing for high-performance and marine applications
• Resists corrosion in marine environments
• Maintains seal integrity under high boost and extreme combustion pressures
• Reusable in many applications when properly maintained
• Compatible with aluminum and iron block/head combinations

This gasket is ideal for performance rebuilds, racing applications, and marine engine rebuilds where reliability and superior sealing are critical. Cometic Gaskets are made in the USA and are trusted by professional engine builders worldwide.