Cometic C4586-051 MLS Cylinder Head Gasket for Honda B21A1 84mm Bore

The Cometic C4586-051 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Honda B21A1 engines. This high-performance gasket features an 84mm bore diameter and a compressed thickness of .051 inches, providing an optimal seal between the cylinder head and engine block.

Key Features:

• Multi-Layer Steel (MLS) construction for superior durability and heat resistance
• 84mm bore diameter for precise fitment on Honda B21A1 engines
• .051 inch (1.3mm) compressed thickness for proper compression ratio
• Advanced embossment technology ensures even pressure distribution
• Withstands extreme cylinder pressures and temperatures
• Eliminates leak paths for combustion gases and coolant

Cometic MLS gaskets feature multiple layers of stainless steel with a Viton rubber coating, making them ideal for high-performance and forced induction applications. The flexible design accommodates minor surface imperfections while maintaining a reliable seal under demanding conditions. Perfect for engine rebuilds, performance upgrades, or OEM replacement on Honda B21A1 engines.