Cometic C5786-051 Chevy Small Block Head Gasket MLX Bore - V8 051 4.220

The Cometic C5786-051 is a Multi-Layer Extreme (MLX) cylinder head gasket engineered specifically for Chevrolet Generation 1 Small Block V8 engines. This precision gasket features a compressed thickness of .051 inches and a 4.220-inch bore diameter to accommodate performance builds with overbored cylinders.

Key Specifications:

• Compressed thickness: .051 inches (51 thousandths)
• Bore diameter: 4.220 inches
• Multi-Layer Extreme (MLX) construction with stainless steel layers
• Designed for 18-degree and 23-degree cylinder heads
• Round bore configuration with integrated steam holes
• Compatible with Chevrolet Gen-1 Small Block V8 engines (265, 283, 302, 305, 307, 327, 350, 400 cubic inch)

Performance Features:

• MLX construction provides superior sealing under extreme cylinder pressures
• Stainless steel core layers resist corrosion and withstand high temperatures
• Elastomeric coating ensures optimal sealing without retorque requirements
• Engineered for high-performance, racing, and forced induction applications
• Round bore design optimizes combustion chamber sealing

Cometic MLX gaskets are the preferred choice for engine builders seeking maximum reliability in high-horsepower applications. The steam hole design ensures proper coolant circulation to prevent hot spots and detonation.