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Cometic MLS cylinder head gasket for GM L42/L61 Gen‑1/2 ECOTEC applications, offered with a nominal .070 in thickness and an 89 mm bore; market text notes a compressed operating thickness of 0.036 in. The multi‑layer stainless construction features embossed, Viton‑coated outer layers and an uncoated center shim for thickness control. This MLS design seals dissimilar head and block materials without sealants while improving load distribution and reducing clamp load.
Cometic GM L42/L61 Gen-1/2 ECOTEC .070in MLS Cylinder Head Gasket - 89mm Bore
