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The Cometic MLS head gasket for GM LS1/LS2/LS3/LS6 Gen‑3/4 small‑block V8 engines (4.190" bore, 0.060" compressed thickness) features multiple embossed stainless steel layers with Viton‑coated outer faces to seal high‑output engines without sealants. It suits aluminum heads to aluminum or cast‑iron blocks and withstands shearing between dissimilar materials. A stainless center shim manages thickness while embossed layers distribute clamp load, improve load distribution and limit bore distortion.
Cometic GM LS1 SB 4.190 inch Bore .060 inch MLS-5 Head Gasket
