Cometic 4.200 MLS Head Gasket .040 - SB Chrysler R3 Block 91929939 Backing Disc

Backing Disc

Drain plug kits include a machined weld-on bung that has a step added to fit inside a drilled hole for easy installation

2016-2018 Chevrolet Silverado 2500 HD

3/8 in NPT Return

Cometic 4.200 MLS Head Gasket .040 - SB Chrysler R3 Block 91929939 Backing DiscComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Thickness is 0. 040". Use with W2 Heads. 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