Cometic Chevrolet 348/409 W-Series Big Block V8 .056in MLS Cylinder Head Gasket - 4.437in Bore 1989-gmc-v1500-suburban-base-esi4710242 SC1-HDG6 kit features ACT's most

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Cometic Chevrolet 348/409 W-Series Big Block V8 .056in MLS Cylinder Head Gasket - 4.437in Bore 1989-gmc-v1500-suburban-base-esi4710242 SC1-HDG6 kit features ACT's mostComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 036". World Products Man o War Block. 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