Cometic Chevrolet 348/409 W-Series Big Block V8 .092in MLS Cylinder Head Gasket - 4.200in Bore

This is a Cometic Multi-Layer Steel (MLS) cylinder head gasket for Chevrolet 348/409 W-Series Big Block V8 engines. It features a 4.200 inch bore and a compressed thickness of .092 inches. These gaskets are built to handle the demands of high-output engines and are designed to provide a strong seal without needing additional sealants.

Comprised of multiple embossed stainless steel layers, this gasket offers increased strength and resistance to corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing environments and varying surface finishes. The center layer is stainless steel, allowing for different thickness options to meet specific engine build needs. This construction makes MLS gaskets suitable for combinations of aluminum and cast iron blocks and heads, as they can manage the shearing forces between different metals.

This gasket fits a range of classic Chevrolet vehicles, including models like the Impala, Bel Air, and C10 Pickup from the late 1950s and early 1960s. It's a solid option when rebuilding or refreshing the top end of your W-Series Big Block.