Cometic 4.125 MLS Head Gasket .040 - GM LS1 10000012 From performance street machines to

From performance street machines to professional drag racers

SUVs and trucks

Like the 01323 kit

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Cometic 4.125 MLS Head Gasket .040 - GM LS1 10000012 From performance street machines toComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". With MID Sleeves. 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