Cometic 4.165" Bore Head Gasket 0.040" Thickness Multi-Layered Steel SB Chevy MBSSE 3-1/2 in Turn Down Outlet

3-1/2 in Turn Down Outlet

3/4 in 36 Spline to 9/16 in 26 Spline

1955-1979 Pontiac Laurentian

4-3/8 in OD Balancer

Cometic 4.165" Bore Head Gasket 0.040" Thickness Multi-Layered Steel SB Chevy MBSSE 3-1/2 in Turn Down OutletComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". With Steam Holes. 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