Cometic GM/LS Head Gasket, 4.030 in. Bore, .051 in. Thickness

Cometic Gasket have been proven under the most demanding track conditions. They are constructed from multiple layers of stainless steel (MLS) for strength and excellent rebound characteristics. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. The outer layers are coated with a Viton (a flouroelastomer rubber based material that is heat resistant)and designed to Help sealing.