Cometic 4.470 MLS Head Gasket .040 - BB Chevy / Mercury Marine AA0220BG1T61 COMETIC Front and Rear Main

COMETIC Front and Rear Main Crank Seals are manufactured from the best materials available and are suited for all types of environments

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1955-1963 Chevrolet Corvette

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Cometic 4.470 MLS Head Gasket .040 - BB Chevy / Mercury Marine AA0220BG1T61 COMETIC Front and Rear MainComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". Cometic MLS (Multi Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two