Cometic 4.100 MLS Head Gasket .027 - Ford 351C/400M 11504 System will fit vehicles with

System will fit vehicles with and without NPP

1986-1990 Chevrolet G30

intake valves and oxygen sensors

2 in Longer Big Body

Cometic 4.100 MLS Head Gasket .027 - Ford 351C/400M 11504 System will fit vehicles withComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 027". 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