Cometic 4.100" Bore Head Gasket 0.040" Thickness Multi-Layered Steel SB Chevy RS00400109 An exclusive new modern combination

An exclusive new modern combination chamber design with double quench pad area helps the LSX generate huge low and mid lift airflow numbers

Easily add additional mount or pivot mount when experimenting or trying different set-ups

Ford: F-250 Super Duty 20 - 22

Green Cushioned Grip

Cometic 4.100" Bore Head Gasket 0.040" Thickness Multi-Layered Steel SB Chevy RS00400109 An exclusive new modern combinationComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". 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