Cometic Chevrolet 348/409 W-Series Big Block V8 .070in MLS Cylinder Head Gasket - 4.437in Bore

This is a Cometic Multi-Layer Steel (MLS) cylinder head gasket designed for Chevrolet 348/409 W-Series Big Block V8 engines. It features a .070 inch thickness and a 4.437 inch bore, making it suitable for a range of classic Chevrolet vehicles like the Impala, Bel Air, and C10 Pickup from the late 1950s and early 1960s. This gasket is built to handle the demands of high-output engines, ensuring a strong seal between your cylinder head and engine block.

The MLS construction uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit and works well with different block and head materials, including aluminum to cast iron. The compressed operating thickness is .036 inches, and the center shim layer can be varied to meet different thickness needs. These gaskets are designed to seal effectively without the need for additional sealants.