Cometic Chevrolet Mark-IV Big Block V8 .047in MLS Cylinder Head Gasket - 4.320in Bore

Starting with a .047 inch compressed operating thickness, this Cometic Multi-Layer Steel (MLS) head gasket is built for serious performance. It's designed for Chevrolet Mark IV Big Block V8 engines with a 4.320 inch bore, fitting a wide range of vehicles from 1965 through the mid-1980s, including popular models like the Chevrolet Impala, C10 Pickup, and Camaro.

The strength of this gasket comes from its multiple stainless steel layers, which help it rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This makes it ideal for sealing aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as it can manage the shearing forces between different metals. The center layer is stainless steel, and its thickness can be varied to meet different engine requirements, though this specific gasket is set at .047 inches.

Because these MLS gaskets are well-built and require no additional sealants, they offer maximum sealing performance for high-output engines. They are a solid option when you need reliable sealing for your rebuild or performance upgrade.