Cometic Chevrolet 348/409 W-Series Big Block V8 .051in MLS Cylinder Head Gasket - 4.437in Bore

This Cometic Multi-Layer Steel (MLS) head gasket is built with multiple embossed layers of stainless steel, featuring an outer coating of Viton rubber. This construction is designed to handle the demands of high-output engines, offering a robust seal without the need for additional sealants. It's a solid choice for pairing aluminum heads with either aluminum or cast iron blocks, as the multi-layer design helps manage the shearing forces that can occur between dissimilar materials.

The stainless steel layers provide increased strength and resistance to corrosion, while the Viton coating on the outer layers can withstand temperatures up to 482°F (250°C), making it suitable for harsh sealing environments. The center shim layer is uncoated stainless steel and can be varied to achieve different compressed thicknesses, with this specific gasket having a compressed operating thickness of 0.036 inches. 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.