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Cometic MLS head gasket for GM LS Gen‑3/4 small block V8 with a 3.910" bore and .040" compressed thickness. It provides sealing for high‑output LS engines without sealants and fits modern aluminum head/block combinations. Built from multiple embossed stainless steel layers with Viton coating on the outer faces and an uncoated shim center. The multilayer construction rebounds, resists corrosion, lowers clamp load and evens sealing pressure across the bore.
Cometic GM LS1 SB 3.910 inch Bore .040 inch MLS Head Gasket
