Cometic Chevrolet Mark-IV Big Block V8 .058in MLS Cylinder Head Gasket - 4.630in Bore

Cometic Gasket is well-known for making reliable sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s built specifically for Chevrolet Mark-IV Big Block V8 engines and is designed to handle the demands of high-output applications. This gasket features a compressed operating thickness of 0.058 inches and a bore size of 4.630 inches, making it suitable for a wide range of Chevrolet vehicles from the mid-60s through the mid-80s, including models like the Impala, Chevelle, and C10 Pickup.

What makes this gasket stand out is its construction. It’s made from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion and maintain a strong seal. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit and works well in tough sealing environments. This advanced design means the gasket requires no additional sealants, simplifying installation whether you're pairing aluminum heads with aluminum blocks or aluminum heads with cast iron blocks.