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Cometic MLS cylinder head gasket for the GM L18 Vortec 8100 Gen‑VII Big Block V8, .040in compressed thickness with a 4.450in bore for the left side. Multiple embossed stainless steel layers combine with Viton-coated outer faces to provide heat and chemical resistance. The uncoated center shim accommodates thickness changes and the MLS construction evens load distribution, reduces clamp load, and maintains reliable sealing between dissimilar head and block materials.
Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .040in MLS Cylinder Head Gasket - 4.450in Bore - LHS
