Cometic C5641-098 GM Mercury Marine Gen-IV Big Block MLS Head Gasket Bore - V8 4.600

The Cometic C5641-098 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for GM and Mercury Marine Gen-IV big block V8 engines with a 1050 cubic inch displacement. This professional-grade gasket features a 4.600-inch bore diameter and .098-inch compressed thickness, making it ideal for high-performance and marine applications.

Key Features:

• Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme conditions
• 4.600-inch bore diameter precisely matched to Gen-IV big block specifications
• .098-inch compressed thickness for optimal compression ratio control
• Includes provisions for 2 slotted lifter valley bolts for proper engine assembly
• Engineered for both automotive and marine applications including Mercury Marine engines
• MLS design offers exceptional resistance to extreme cylinder pressures and temperatures
• Embossed stainless steel layers with elastomeric coatings ensure leak-free performance

Cometic MLS gaskets are the choice of professional engine builders and performance enthusiasts who demand reliable sealing in demanding applications. The advanced multi-layer design allows the gasket to conform to imperfect sealing surfaces while maintaining its structural integrity under high boost, nitrous oxide, and extreme heat conditions common in marine and high-performance engines.