4.100 MLS Head Gasket .040 GM LS1/LS2/LS3/LS6

The 4.100 MLS Head Gasket .040 from Cometic Gaskets is designed for serious LS engine builders and performance enthusiasts who require reliability in high-horsepower applications. This gasket is specifically tailored for the GM LS1, LS2, LS3, and LS6 engine families, which are foundational in modern street and race setups.

Constructed from multi-layer steel (MLS), this gasket offers superior sealing capabilities compared to traditional composition gaskets, particularly under the pressures and thermal cycling associated with forced induction or high-rev naturally aspirated builds. The .040-inch thickness is a favored choice for stock or mildly ported LS head combinations, providing a balanced compression ratio suitable for various displacement and boost levels.

Engine builders and mechanics will appreciate the 4.100 MLS Head Gasket .040's compatibility across the entire LS platform, ensuring proper sealing around each combustion chamber and cooling passage. This gasket excels at maintaining its clamp load over extended engine operation, significantly reducing the risk of blow-by and coolant leakage that can occur with older materials.