4.200 MLX Head Gasket LH .052 GM LSX

The Cometic Gaskets 4.200 MLX Head Gasket LH .052 GM LSX is a precision cylinder head gasket designed specifically for left-hand applications on GM LS-series engines. This gasket is ideal for both high-performance and stock LS-based builds, ensuring optimal sealing reliability where compression thickness and bore diameter are critical for performance and longevity.

With a specified bore diameter of 4.200 inches and a compression thickness of 0.052 inches, this multi-layer steel gasket maintains proper clamping load and combustion sealing across the cylinder head. Its construction offers superior heat dissipation and durability compared to single-layer designs, significantly reducing the risk of gasket failure under high load or elevated cylinder pressures.

Engine builders, LS engine swap enthusiasts, and those performing cylinder head service on GM LS-series platforms will find this gasket essential. Whether rebuilding stock LS1/LS2 engines or upgrading to LS3/L92X heads, using the correct head gasket specification is crucial to prevent coolant leaks, oil contamination, and combustion bypass.