Cometic Cylinder Head Gasket - 4.630 in Bore - 0.040 in Compression Thickness - Multi-Layer - Big Block Chevy C5331-040 H762001S Comes standard with rear facing

Comes standard with rear facing vents that create a Venturi effect allowing air to exchange and circulate in the helmet white preventing dust and dirt from entering

Free Flow LPH: 95

and has the same level of certification and safety as all NecksGen head and neck restraints

Exhaust port location: Stock

Relocation Brackets

Cometic Cylinder Head Gasket - 4.630 in Bore - 0.040 in Compression Thickness - Multi-Layer - Big Block Chevy C5331-040 H762001S Comes standard with rear facingComprised 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