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The Cometic MLS head gasket for GM LS1/LS2/LS3/LS6 Gen‑3 small‑block V8 engines (4.125" bore, 0.051" compressed thickness) includes Darton MID sleeves and multiple embossed stainless steel layers with Viton‑coated outer faces to provide sealant‑free sealing for high‑output applications. It suits aluminum heads to aluminum or cast‑iron blocks and resists shearing between materials. The uncoated stainless center shim controls thickness while embossed layers distribute load and reduce required clamp force.
Cometic GM LS1 (w/M.I.D. Sleeves) 4.125 inch Bore .051 inch MLS Head Gasket
