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The Cometic MLS head gasket for GM LS1/LS2/LS3/LS6 Gen‑3 small‑block V8 engines (4.125" bore, 0.036" compressed thickness) includes Darton MID sleeves and multiple embossed stainless steel layers with 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 dissimilar materials. The uncoated stainless center shim controls thickness while embossed layers distribute load and reduce bore distortion.
Cometic GM LS1 (w/M.I.D. Sleeves) 4.125 inch Bore .036 inch MLS Head Gasket
