Cometic GM LS1 (w/M.I.D. Sleeves) 3.910 inch Bore .040 inch MLS Headgasket - C5788-040 GT Base If the distance is more

If the distance is more than 3'

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Cometic GM LS1 (w/M.I.D. Sleeves) 3.910 inch Bore .040 inch MLS Headgasket - C5788-040 GT Base If the distance is moreComprised 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