Cometic 4.100" Bore Head Gasket 0.045" Thickness Multi-Layered Steel SB Chevy R010015YM More Spark Duration

More Spark Duration

Chassis Engineering was started in 1980 to serve the needs of drag racers and hot rodders on the east coast who in the early days of the sport

Machined aluminum cap twists into the filler neck and seals with an O-ring

not for ECU calibration

Cometic 4.100" Bore Head Gasket 0.045" Thickness Multi-Layered Steel SB Chevy R010015YM More Spark DurationComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 045". Round Bore. 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