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The Cometic MLS head gasket for Pontiac 400/428/455 V8 (4.410 inch bore) combines embossed stainless steel layers coated in Viton with a compressed operating thickness of 0.051 inch. An uncoated stainless center shim allows thickness adjustments. This MLS gasket seals without sealants, tolerates aluminum and cast-iron mating surfaces, resists corrosion and shearing, and distributes clamp load to help prevent bore distortion under operating loads.
Cometic Pontiac 400/428/455 V8 .045in MLS Cylinder Head Gasket - 4.410in Bore
