Cometic 3.910 MLS Head Gasket .051 - GM LS1 Helmet Screw Kit Adjustments: microphone mouth distance

Adjustments: microphone mouth distance

Sierra 1500 HD 2006-2005

high durometer polyurethane bushings

1958-1985 Chevrolet Impala

Cometic 3.910 MLS Head Gasket .051 - GM LS1 Helmet Screw Kit Adjustments: microphone mouth distanceComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 051". 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