Cometic C5272-040 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

The Cometic C5272-040 is a premium multi-layer steel (MLS) cylinder head gasket engineered specifically for Chevrolet Generation 1 Small Block V8 engines. This high-performance gasket features a .040" compressed thickness and is designed to accommodate a 4.165" bore diameter, making it ideal for performance builds and engine rebuilds requiring precise sealing.

Key Features:

• Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme cylinder pressures and temperatures
• .040" compressed gasket thickness allows for precise compression ratio tuning
• 4.165" bore diameter accommodates stock and mild overbore applications
• Compatible with 18-degree and 23-degree cylinder heads for versatile application coverage
• Valve pocketed bore design prevents interference with larger valves in performance heads
• Integrated steam holes promote efficient coolant circulation and prevent hot spots
• Engineered for Chevrolet Gen-1 Small Block V8 engines (262-400ci applications)

Cometic's MLS gaskets utilize multiple layers of stainless steel with an embossed active sealing area that responds to combustion chamber and coolant pressure fluctuations. This technology ensures a reliable seal in high-performance applications including turbocharged, supercharged, and nitrous oxide systems. The gasket's design accommodates thermal expansion and engine movement while maintaining consistent clamping force across the entire sealing surface.