Cometic C5640-095 GM Mercury Marine Gen-IV Big Block MLS Cylinder Head Gasket - V8

The Cometic C5640-095 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM and Mercury Marine 1050 Gen-IV Big Block V8 engines. This gasket features a .095-inch compressed thickness and a 4.580-inch bore diameter, providing an optimal seal for high-performance marine and automotive applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 4.580-inch bore diameter designed for Gen-IV Big Block V8 engines
• .095-inch compressed gasket thickness for precise compression control
• Compatible with GM 1050 and Mercury Marine Gen-IV applications
• Includes 2 slotted lifter valley bolt holes for proper oiling system integration
• Premium MLS design resists blowout and maintains seal integrity under extreme conditions

Cometic's MLS gaskets utilize multiple layers of stainless steel with elastomeric coatings to accommodate engine movement and thermal expansion while maintaining a positive seal. This gasket is ideal for performance rebuilds, high-horsepower applications, and marine engine restorations where reliability is critical.