Cometic C5249-045 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 045 4.200

The Cometic C5249-045 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Gen-1 Small Block V8 engines. This high-performance gasket features a compressed thickness of .045 inches and accommodates a 4.200-inch bore diameter, making it ideal for performance rebuilds and forced induction applications.

Key Features:

• Multi-Layer Steel construction provides superior sealing and durability under extreme cylinder pressures
• Designed for 18-degree and 23-degree cylinder heads commonly used in performance applications
• Round bore configuration ensures optimal combustion chamber sealing
• Includes steam holes for proper coolant circulation and thermal management
• .045-inch compressed thickness allows for precise compression ratio tuning
• Embossed stainless steel layers with Viton rubber coating resist combustion gases and fluids

Cometic MLS gaskets are the choice of professional engine builders and racers who demand maximum reliability. The multi-layer design allows the gasket to recover from thermal expansion and contraction cycles while maintaining constant sealing pressure. This gasket is compatible with aluminum and iron cylinder heads and blocks when surfaces are properly prepared with a 50 RA or smoother finish.