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The Cometic MLS head gasket for GM LS1/LS2/LS3/LS6 Gen‑3/4 small‑block V8 engines (4.130" bore, 0.120" compressed thickness) employs multiple embossed stainless steel layers with Viton‑coated outer faces to seal high‑output engines without sealants. It accommodates aluminum heads on aluminum or cast‑iron blocks and withstands shear forces between different materials. The uncoated stainless center shim lets builders vary thickness while embossed layers distribute load and help reduce bore distortion.
Cometic GM LS1 SB 4.130 inch Bore .120 inch MLS Head Gasket
