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Cometic MLS head gasket for GM LSX Gen‑4 small block V8 with a 4.125" bore and nominal .066 in thickness, left-hand side. Intended for high-output engine sealing, it requires no sealants and is compatible with aluminum heads on aluminum or cast-iron blocks. Built from embossed stainless steel layers with Viton coatings on both outer faces and an uncoated center shim, the gasket resists corrosion, evens sealing loads and reduces clamp load to minimize bore distortion.
Cometic GM LSX Gen-4 Small Block V8 .066in MLS Cylinder Head Gasket - 4.125in Bore - LHS
