Cometic GM/Mercury Marine 1050 Gen-IV Big Block V8 .066in MLS Cylinder Head Gasket-4.600in Bore Vacuum Manifold / Boost Ports 270in OD Valve Spring Locator

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Cometic GM/Mercury Marine 1050 Gen-IV Big Block V8 .066in MLS Cylinder Head Gasket-4.600in Bore Vacuum Manifold / Boost Ports 270in OD Valve Spring LocatorComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed thickness is 0. 066". 2 Slotted Valley Bolts. 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