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The Cometic MLS head gasket for GM LSX Gen-4 small block V8 (4.125-inch bore, .040" compressed thickness) uses multiple embossed stainless steel layers with Viton-coated outer faces to provide robust sealing. MLS construction lets it rebound and resist corrosion, works for aluminum-to-aluminum or aluminum-to-cast-iron applications, and is specified to minimize clamp load and bore distortion without requiring sealants.
Cometic GM LSX McLaren 4.125in Bore .040 inch MLS Head Gasket - Left
