Cometic C5271-051 MLS Cylinder Head Gasket for Chevrolet Small Block - Gen-1 V8

The Cometic C5271-051 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 .051-inch compressed thickness and is designed to provide exceptional sealing reliability under extreme combustion pressures and temperatures.

Key Specifications:

• Bore Size: 4.125 inches - optimized for standard and slightly over-bored applications
• Gasket Thickness: .051 inches (compressed)
• Head Compatibility: Designed for 18-degree and 23-degree cylinder heads
• Construction: Multi-Layer Steel (MLS) design for superior durability and recovery
• Valve Pocketed Bore: Provides clearance for larger valves in performance applications
• Steam Holes: Integrated for proper coolant flow and thermal management

MLS Technology Benefits:

• Multiple layers of stainless steel provide micro-sealing capability
• Superior combustion seal compared to traditional composite gaskets
• Excellent rebound characteristics maintain seal integrity through heat cycles
• Resistant to corrosion and chemical degradation
• Ideal for naturally aspirated, supercharged, and turbocharged applications

Cometic gaskets are manufactured in the USA using advanced materials and precision manufacturing processes. This gasket is compatible with various Chevrolet Gen-1 Small Block engines including 265, 283, 302, 327, 350, and 400 cubic inch displacements when paired with the appropriate bore size and cylinder head configuration.