Mr. Gasket 5848 Stock Ultra-Seal Intake Manifold Gasket Set Port dimensions measure 2.03" high by 1.11" wide Silicone beading applied around each port creates a tight-leak proof seal Resists wicking and can withstand 600-degree heat Blend of nitrile, rubber, and cork make a base that won't crack or split Complete with manifold end rail seals and distributor gasket