Cometic 4.380 MLS Head Gasket .040 - Pontiac 400/455 Brake Duct Use only with approved Brinn

Use only with approved Brinn RT1 transmission fluid

000 PSI tensile strength

Eye Bolt / Flat Washer / Nut

1977-1978 GMC P25

Cometic 4.380 MLS Head Gasket .040 - Pontiac 400/455 Brake Duct Use only with approved BrinnComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". 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