Cometic 4.100 RH MLS Head Gasket .040 - GM 6.6L Duramax 2010177 75:1 gear reduction is ideal

75:1 gear reduction is ideal for engines with up to 11:1 compression ratio

We have taken our most popular sizes and styles and made them available in this series

11/16 in 36 Spline to 3/4 in Smooth

Ideal For High-Tech Street Rods

Foot Pedal

Cometic 4.100 RH MLS Head Gasket .040 - GM 6.6L Duramax 2010177 75:1 gear reduction is idealComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". Right Side. 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