Cometic 4.100 MLS Head Gasket .040 - SB Chevy LT1 AA0710AG3S57 6 AN Male to 6

6 AN Male to 6 AN Male O-Ring Swivel

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1959-1974 Chevrolet Impala

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Cometic 4.100 MLS Head Gasket .040 - SB Chevy LT1 AA0710AG3S57 6 AN Male to 6Comprised 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