Cometic C4049-018 MLS Multi-Layer Steel Head Gasket .018" Bore

The Cometic C4049-018 is a .018-inch Multi-Layer Steel (MLS) head gasket engineered for high-performance and racing engine applications. Cometic's MLS gaskets are constructed from multiple layers of embossed stainless steel, providing superior sealing integrity under extreme combustion pressures and temperatures.

Key Features:

• MLS (Multi-Layer Steel) Construction — multiple embossed stainless steel layers create a dynamic seal that conforms to surface irregularities
• .018" compressed thickness for precise combustion chamber volume and compression ratio tuning
• Withstands high cylinder pressures associated with forced induction, nitrous, and high-compression naturally aspirated builds
• Requires a minimum surface finish of 60 Ra or smoother for optimal sealing
• Resistant to coolant, oil, and fuel breakdown
• OEM-style installation — no re-torque required after heat cycling

Cometic Gasket is an industry leader in aftermarket performance sealing solutions, and their MLS head gaskets are trusted by professional engine builders and racers worldwide. The C4049-018 is a direct replacement or performance upgrade designed to outlast conventional composite head gaskets in demanding applications.