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Cometic MLS head gasket for the GM L18 Vortec 8100 Gen‑VII 8.1L big‑block V8 (.066" MLS, 4.350" bore, left-hand side) uses multiple embossed stainless steel layers with Viton-coated outer faces for heat and chemical resistance. The multi-layer steel construction rebounds to seal dissimilar materials without sealants, distributes clamp load to reduce bore distortion, and offers corrosion resistance for high‑output applications.
Cometic GM / Mercury 8.1L 496ci 4.350in Bore .066in MLS-5 LH Head Gasket
