Cometic MLS Head Gasket - 90-96 Nissan 300ZX VG30DE VG30DETT - 90mm Bore .051" Thick - C4347-051NOTE: Sold each per head. You will need 2 qty per engine 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 materials. MLS gaskets have increased strength because they are comprised of multiple layers of