Cometic Chevrolet 348/409 W-Series Big Block V8 .120in MLS Cylinder Head Gasket - 4.200in Bore

When you're rebuilding the top end of your Chevrolet 348 or 409 W-Series big block V8, getting the cylinder head gasket right is crucial for a strong seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of high-output engines, ensuring reliable performance for years to come. It's designed to fit a range of classic Chevrolet vehicles, including models like the Impala, Bel Air, and C10 Pickup from the late 1950s and early 1960s.

This gasket is constructed with multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion and maintain a tight seal. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes. The center layer is uncoated stainless steel, allowing for precise thickness control. With a compressed operating thickness of 0.036 inches and a bore size of 4.200 inches, this .120 inch thick gasket is a well-built option for your rebuild. MLS gaskets are ideal for mating aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as they can manage the shearing forces that can occur between different metals.