Cometic Chevy BB Gen IV 396/402/427/454 H/G 4.320 inch Bore .098 inch MLS Head Gasket

Starting with a .098 inch compressed thickness, this Multi-Layer Steel (MLS) head gasket from Cometic is built for serious performance in your Chevy Big Block Gen IV engine. It uses multiple layers of stainless steel for increased strength and the ability to rebound, which helps it resist corrosion and maintain a solid seal. The outer layers are embossed and coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing environments and different surface finishes, making it suitable for both aluminum and cast iron blocks. This design means you don't need any extra sealants, and it's ready to handle the demands of high-output engines.

This gasket is designed for a 4.320 inch bore and is a well-built option for a wide range of Chevrolet vehicles from the mid-60s through the mid-80s, including popular models like the Impala, Chevelle, and C10 pickups. The multi-layer steel construction provides improved sealing performance compared to traditional composite gaskets, especially when dealing with the stresses of performance engines. Cometic's design ensures it can handle the shearing forces that can occur between different block and head materials.