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The Cometic MLS head gasket for GM LS1/LS2/LS3/LS6 Gen‑3 small‑block V8 engines (4.125" bore, 0.040" compressed thickness) ships with Darton MID sleeves and uses multiple embossed stainless steel layers with Viton‑coated outer faces for sealant‑free sealing in high‑output engines. It accommodates aluminum heads on aluminum or cast‑iron blocks and withstands shear forces between materials. The center stainless shim allows thickness control while embossed layers improve load distribution and limit bore distortion.
Cometic GM LS1 (w/M.I.D. Sleeves) 4.125 inch Bore .040 inch MLS Head Gasket
