Cometic C5273-051 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.200

The Cometic C5273-051 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for first-generation Chevrolet Small Block V8 engines. This precision gasket features a .051" (0.051 inch) compressed thickness and is designed for 4.200" bore applications, making it ideal for performance builds and engine rebuilds requiring reliable sealing under high compression and temperature conditions.

Key Specifications:

• Compressed thickness: .051 inch (51 thousandths)
• Bore size: 4.200 inches
• Multi-Layer Steel (MLS) construction for superior sealing
• Compatible with 18-degree and 23-degree cylinder heads
• Valve pocketed bore design for valve clearance
• Includes steam holes for proper coolant circulation

MLS Technology Benefits:

• Multiple layers of stainless steel provide exceptional durability
• Superior resistance to extreme temperatures and pressures
• Excellent conformability to deck surface imperfections
• Maintains seal integrity through heat cycling
• Ideal for high-performance and forced induction applications

Cometic's MLS gaskets are a proven choice for racers and performance enthusiasts who demand maximum reliability. The valve pocketed design ensures proper clearance for performance valve configurations, while the steam hole placement maintains optimal coolant flow to prevent hot spots. This gasket is compatible with both 18-degree and 23-degree aftermarket cylinder heads commonly used in high-performance Small Block Chevy builds.