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Cometic's .027 inch MLS head gasket for Chevrolet 348/409 W-Series Big Block V8 (4.200 in bore) is built from multiple embossed stainless steel layers with Viton-coated outer faces for heat resistance and sealing durability. The MLS design rebounds, resists corrosion and seals aluminum-to-iron joints without additional sealants. The center shim layer can be varied to match thickness requirements and helps reduce clamp load and bore distortion.
Cometic Chevrolet 348/409 W-Series Big Block V8 .027in MLS Cylinder Head Gasket - 4.200in Bore
