Brodix intake manifold gasket for Big Block Chevy BB-3 Xtra O 365cc heads. Features a 0.06in thickness, 1.898 x 2.535in oval port, made from rubber-coated composite for a reliable seal in high-performance racing engines. Designed for BB-3 Xtra O 365cc heads, ensuring optimal sealing and performance. Requires 2 per engine. Sold as each.