Cometic C5402-045 MLS Cylinder Head Gasket 4.160" Bore .045" Chevy Small Block

The Cometic C5402-045 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Chevrolet Generation 1 Small Block V8 engines. Engineered with a 4.160-inch bore diameter and .045-inch compressed thickness, this gasket provides exceptional sealing for performance and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior strength and durability
• 4.160-inch bore diameter accommodates various overbore configurations
• .045-inch compressed thickness allows precise compression ratio tuning
• Undersized water ports designed for aftermarket cylinder heads, allowing custom port matching
• Engineered for Generation 1 Chevy Small Block V8 engines (262-400ci)
• Advanced coating technology ensures optimal sealing under extreme conditions
• Reusable design withstands thermal cycling and high cylinder pressures

Cometic MLS gaskets feature multiple layers of stainless steel with advanced polymer coatings that micro-seal surface imperfections while maintaining excellent recovery properties. The undersized water ports provide flexibility for custom port shaping when using aftermarket aluminum heads, giving engine builders complete control over coolant flow optimization. Ideal for high-performance street engines, racing applications, and boosted combinations where precision sealing is critical.