Cometic 4.630 MLS Head Gasket .051 - BB Chevy HSYTH11SASPA Lifter valley vents positively vent

Lifter valley vents positively vent the crankcase and eliminate oil drain-through and windage losses

Precision-machined to tight tolerances

Universal style U-bolt pads fit 3" diameter axle tubes and leaf springs up to 2-1/2" wide using 1/2" U-bolt fasteners

5 x 5 in Base

Simply cut a hole in you tank and measure the depth

Cometic 4.630 MLS Head Gasket .051 - BB Chevy HSYTH11SASPA Lifter valley vents positively ventComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 051". 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