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Cometic MLS cylinder head gasket for GM L42/L61 Gen‑1/2 ECOTEC engines, listed with a nominal .075 in thickness and an 89 mm bore; market notes reference a compressed operating thickness of 0.036 in. Multiple embossed stainless steel layers coated with Viton on both outer faces and an uncoated shim provide sealing strength, rebound, and corrosion resistance. The MLS gasket seals aluminum heads to aluminum or cast‑iron blocks without sealants and helps minimize distortion.
Cometic GM L42/L61 Gen-1/2 ECOTEC .075in MLS Cylinder Head Gasket - 89mm Bore
