Cometic C5641-080 GM Mercury Marine Gen-IV MLS Cylinder Head Gasket Bore - 4.600 080

The Cometic C5641-080 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for GM and Mercury Marine Gen-IV 1050 big block V8 engines. This high-performance gasket features a .080" compressed thickness and is manufactured to accommodate a 4.600" cylinder bore diameter.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• .080" compressed gasket thickness for precise compression ratio tuning
• 4.600" bore diameter engineered for Gen-IV big block applications
• Includes 2 slotted lifter valley bolt holes for proper installation
• Designed for GM and Mercury Marine 1050 Gen-IV V8 engines
• Cometic's proprietary MLS technology provides enhanced blow-out resistance

Cometic's MLS head gaskets utilize multiple layers of stainless steel with a Viton rubber coating to create a superior seal that withstands extreme cylinder pressures and temperatures. The embossed layers provide multiple sealing points while maintaining proper gasket loading across the entire sealing surface. This gasket is ideal for high-performance street engines, racing applications, and marine installations where reliability and consistent sealing are critical.