Cometic C5637-027 MLS Cylinder Head Gasket GM Mercury Marine Gen IV/V/VI Bore - 4.600

The Cometic C5637-027 is a 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 a .027" compressed thickness and accommodates a 4.600" bore diameter, making it ideal for performance marine and high-output automotive applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• Compressed thickness: .027 inches
• Bore size: 4.600 inches
• Designed for 4-bolt lifter valley configuration
• Compatible with GM/Mercury Marine Gen-IV, Gen-V, and Gen-VI big block V8 engines
• Premium materials resist corrosion and thermal expansion

Cometic's MLS gaskets feature multiple layers of stainless steel with a Viton rubber coating, providing exceptional resistance to extreme temperatures and pressures. The embossed design ensures optimal sealing around combustion chambers, oil passages, and coolant ports. This gasket is specifically configured for engines with four bolts in the lifter valley, a common feature in marine and performance big block applications.