Cometic 4.200 " Bore MLS Head Gasket - SB Chevy HS310320 Converts old style Bert Ball

Converts old style Bert Ball Spline Transmission to new double seal specifications

Measurements: 30

1981-1986 Mercury Cougar

CAD-designed

Precision Movement And Extreme Accuracy

Cometic 4.200 " Bore MLS Head Gasket - SB Chevy HS310320 Converts old style Bert BallComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 066". 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