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Cometic MLS head gasket for GM LSX Gen‑4 small block V8 with a 4.125" bore and nominal .027 in thickness, left-hand side for 18-bolt heads. It seals high-output engines without additional sealants and is suitable for aluminum-to-aluminum and aluminum-to-cast-iron assemblies. The gasket stacks embossed stainless steel layers with Viton-coated outer faces and an uncoated center shim to resist corrosion, even load distribution and lower clamp load.
Cometic GM LSX Gen-4 Small Block V8 .027in MLS Cylinder Head Gasket - 4.125in Bore - LHS
