Cometic Head Gasket - 4.630" Bore - 0.098" Thickness - Multi-Layered Steel - BB Chevy 359102 The RZ-56 Air includes minimal

The RZ-56 Air includes minimal front venting and a Top Air Accessory to run Forced Air

Restrictor Plate

square drive forged into bolt head

and throttle response is improved by up to 30%

Cometic Head Gasket - 4.630" Bore - 0.098" Thickness - Multi-Layered Steel - BB Chevy 359102 The RZ-56 Air includes minimalComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 098". 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