Cometic C5641-075 GM Mercury Marine Gen-IV Big Block MLS Cylinder Head Gasket - V8

The Cometic C5641-075 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered for GM and Mercury Marine Gen-IV big block V8 engines with a 1050 cubic inch displacement. This high-performance gasket features a 4.600-inch bore diameter and a compressed thickness of .075 inches, providing exceptional sealing capabilities for high-horsepower marine and automotive applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior strength and durability
• 4.600-inch bore diameter accommodates Gen-IV big block configurations
• .075-inch compressed thickness for optimal compression ratio tuning
• Includes two slotted lifter valley bolts for secure installation
• Designed specifically for GM and Mercury Marine 1050 Gen-IV V8 engines
• MLS technology provides exceptional resistance to blow-out and leakage
• Engineered to withstand extreme cylinder pressures and temperatures

Cometic MLS gaskets utilize multiple layers of stainless steel with proprietary coatings to create a gasket that conforms to irregular surfaces while maintaining consistent clamping pressure. This design makes them ideal for high-performance marine engines, forced induction applications, and engines running high compression ratios. The included slotted lifter valley bolts ensure proper installation and long-term reliability in demanding marine environments.