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The Cometic MLS cylinder head gasket for Chevrolet 348/409 W-Series Big Block V8 (.051in nominal, 4.375in bore) is built from three to five stainless steel layers to provide strength, rebound and corrosion resistance. Embossed outer layers are coated with Viton for high-temperature sealing, while the center shim remains uncoated and can be varied for thickness. It requires no sealants, tolerates mixed-material assemblies and helps distribute clamp load to reduce bore distortion.
Cometic Chevrolet 348/409 W-Series Big Block V8 .051in MLS Cylinder Head Gasket - 4.375in Bore
