SBC Spread port header flanges2" round port,some non-spread

Custom build your exhaust with high quality Aeroflow components. Aeroflow’s CNC header flanges are manufactured from 9.5mm (3/8”) thick 304 Stainless Steel. They are precision-cut to meet your ports, reduce warping, and prevent leaks. The Aeroflow header flanges are offered in a variety of header flange sizes and shapes to mate your heads and headers to meet yourexhaust building needs.