Cometic C5636-051 MLS Cylinder Head Gasket GM Mercury Marine Big Block Bore - V8 4.580

The Cometic C5636-051 is a high-performance 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 compressed thickness of .051 inches and is designed for engines with a 4.580-inch bore diameter.

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• Compressed gasket thickness: .051 inches (51 thousandths)
• Bore size: 4.580 inches
• Compatible with cylinder heads featuring 4 bolts in the lifter valley configuration
• Designed specifically for GM/Mercury Marine Big Block V8 Gen-IV/V/VI applications
• Provides excellent conformability to cylinder head and block surfaces
• Withstands extreme temperatures and combustion pressures

Cometic MLS gaskets are constructed from multiple layers of stainless steel, providing exceptional resistance to combustion leakage and superior thermal conductivity. The embossed sealing beads ensure proper load distribution and sealing around critical areas including combustion chambers, coolant passages, and oil galleries. This gasket is ideal for high-performance marine and automotive applications where reliability and consistent sealing are essential.