Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Cometic MLS cylinder head gasket for Chevrolet 348/409 W-Series Big Block V8 (.056in nominal, 4.375in bore) combines multiple stainless steel layers for durable sealing in high-output engines. Embossed outer layers are coated with Viton to withstand heat and harsh sealing environments while the uncoated center shim allows thickness variation. No sealants are needed; the gasket resists corrosion, handles dissimilar-material shear and helps conform clamp load across the sealing area.
Cometic Chevrolet 348/409 W-Series Big Block V8 .056in MLS Cylinder Head Gasket - 4.375in Bore
