4.150 MLX Head Gasket .040 GM LSX Race RH

The 4.150 MLX Head Gasket .040 GM LSX Race RH from Cometic Gaskets is designed for high-performance LSX engine platforms that require maximum reliability under extreme cylinder pressures. This gasket is specifically intended for the right-hand bank of the engine, making it ideal for serious racers, engine builders, and enthusiasts who prioritize combustion chamber sealing in boosted or naturally aspirated applications.

Cometic's MLX technology is recognized as a leading choice in aftermarket head gasket design, providing superior heat resistance and maintaining gasket crush over repeated thermal cycles. The .040-inch thickness refers to the gasket's compressed height after installation, which is crucial for determining combustion chamber volume and compression ratio. The 4.150-inch bore size is optimized for LSX block geometry, ensuring precise sealing around the combustion chamber.

Engine builders working with Gen III or Gen IV LSX engines, including LS1, LS2, LS3, or LSA variants, rely on this gasket for high-performance builds, supercharger installations, and nitrous applications. The MLX composite facing effectively prevents hot spots at the cylinder walls and head interface, minimizing the risk of blow-by during high-boost or high-rpm operation.