Cometic C5786-040 MLX Cylinder Head Gasket for Chevy Small Block Bore - V8 4.220

The Cometic C5786-040 is a premium Multi-Layer Stopper (MLX) cylinder head gasket engineered specifically for Generation 1 Chevrolet Small Block V8 engines. This high-performance gasket features a .040" compressed thickness and is designed for 4.220" bore applications with 18-degree or 23-degree cylinder heads.

Key Specifications:

• Compressed thickness: .040 inch
• Bore size: 4.220 inches (round bore design)
• Compatible with 18-degree and 23-degree cylinder heads
• Includes integrated steam holes for proper coolant circulation
• Multi-Layer Stopper (MLX) construction for superior sealing

Advanced MLX Technology:

Cometic's MLX gaskets utilize multiple layers of stainless steel with an exclusive stopper-layer design that provides maximum sealing around the combustion chamber. This construction allows the gasket to withstand extreme cylinder pressures while maintaining superior torque retention, making it ideal for high-performance and racing applications.

Application:

Designed for Chevrolet Generation 1 Small Block V8 engines including 262, 265, 267, 283, 302, 305, 327, 350, and 400 cubic inch variants when bored to 4.220". The round bore configuration and steam hole design ensure proper fitment with both original and aftermarket cylinder heads featuring 18-degree or 23-degree valve angles.

Cometic Gaskets are manufactured in the USA using premium materials and precision manufacturing processes to deliver race-proven performance and reliability for street, strip, and track applications.