Cometic 4.200 MLS Head Gasket .051 - SBC 15-NEC-CAP-A and you can add your

and you can add your own

Block Off Plate

while outflowing the factory intake by 21%

EFI applications require high-flow return style regulators: P/N 13132

Bolt and Spacers kits are available separately

Cometic 4.200 MLS Head Gasket .051 - SBC 15-NEC-CAP-A and you can add yourComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 051". With Steam Holes. 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