Cometic 4.165" Bore Head Gasket 0.040" Thickness Multi-Layered Steel SB Chevy aFe Power An exclusive 12 point head

An exclusive 12 point head design

1979-2004 Ford Mustang

1983-1995 Chevrolet G20

NHRA Certified

Cometic 4.165" Bore Head Gasket 0.040" Thickness Multi-Layered Steel SB Chevy aFe Power An exclusive 12 point headComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". 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