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The Cometic MLS head gasket for GM LS1/LS2/LS3/LS6 Gen‑3/4 small‑block V8 engines (4.160" bore, 0.080" compressed thickness) combines embossed stainless steel layers and Viton‑coated outer faces to seal high‑output engines without sealants. It fits aluminum heads on aluminum or cast‑iron blocks and resists shear between materials. The uncoated stainless center shim controls thickness while embossed layers conform load distribution, reduce clamp load and help limit bore distortion.
Cometic GM LS1 SB 4.160 inch Bore .080 inch MLS-5 Head Gasket
