Cometic C5249-056 MLS Cylinder Head Gasket for Chevrolet Small Block - Gen-1 V8

The Cometic Gaskets C5249-056 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Generation 1 Small Block V8 engines. This precision gasket features a .056-inch (1.4mm) compressed thickness and is designed for 4.200-inch bore applications with 18-degree or 23-degree cylinder heads.

Key Specifications:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• Compressed thickness: .056 inches (1.4mm)
• Bore size: 4.200 inches
• Compatible with 18-degree and 23-degree cylinder heads
• Round bore configuration
• Includes steam holes for proper coolant circulation

Advanced MLS Technology:

• Multiple layers of stainless steel provide exceptional strength and conformability
• Viton rubber coating ensures optimal sealing at combustion chamber, coolant, and oil passages
• Reusable design allows for multiple installations when properly torqued
• Withstands extreme cylinder pressures in high-performance and forced induction applications
• Superior resistance to thermal expansion and combustion pressure fluctuations

Cometic MLS gaskets are the preferred choice for performance engine builders, offering consistent clamping pressure across the entire sealing surface. The round bore design with integrated steam holes ensures proper coolant flow to prevent hot spots while maintaining combustion seal integrity. Ideal for street performance, racing, and blown applications on Chevrolet 262, 265, 267, 283, 302, 305, 307, 327, and 350 cubic inch small block engines with compatible bore sizes.