GM LSX Gen-4 V8 .052in MLX Head Gasket

The Cometic Gaskets GM LSX Gen-4 V8 .052in MLX Head Gasket (part number C15503-052) is a precision multi-layer steel cylinder head gasket engineered for GM LS-series engines. This passenger-side gasket features a 4.165-inch bore diameter and 0.052-inch compression thickness, making it the correct choice for stock and lightly modified LSX Gen-4 V8 builds that require precise cylinder sealing without excessive compression loss. Cometic's multi-layer steel construction provides superior gasket durability and conformability compared to traditional composite gaskets, ensuring a reliable seal across the critical interface between the cylinder head and block.

The 0.052-inch thickness is calibrated to maintain proper compression ratios while accommodating minor head resurfacing and block deck variation typical in LS engine assembly. Multi-layer steel gaskets excel at conforming to irregular surfaces, resisting blow-out under boost or high cylinder pressure, and maintaining clamping load retention over extended engine operation. This gasket is designed to work within the torque specifications and fastener geometry of the Gen-4 LS platform, making it essential for proper cylinder head installation, whether during initial assembly, rebuild, or head replacement on street, strip, or competition applications.

Builders and engine shops working with GM LSX Gen-4 V8 engines rely on Cometic's gasket engineering to eliminate common failure modes such as head gasket seepage, coolant weeping, and combustion gas bypass. The MLX gasket line represents a proven balance between cost efficiency and durability for naturally aspirated and moderately boosted applications. Proper installation requires clean deck surfaces, correct fastener torque sequencing, and use of gasket-appropriate sealants per Cometic specifications to achieve the performance this gasket is designed to deliver.